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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Mr. Gasket Headlock Locking Header Bolts - 3/8-16 x 3/4 Inch - Set of 16 - 2231GOverview: Headlock Bolts eliminate the need for lock washers, Period. That's because each Headlock Bolt features 24 equally spaced, stainless steel teeth serrations that bite into and hold onto the attaching surface eliminating the need for lock washers. Features: 16 per Package Includes a ball head hex key socket installation tool that makes it easy to get them started 410 stainless steel Minimum 180,000 PSI tensile strength 24 equally spaced
Overview:
Headlock™ Bolts eliminate the need for lock washers, Period. That's because each Headlock™ Bolt features 24 equally-spaced, stainless steel teeth serrations that bite into and hold onto the attaching surface-eliminating the need for lock-washers.
Features:
- 16 per Package
- Includes a ball-head/hex-key socket-installation tool that makes it easy to get them started
- 410 stainless steel
- Minimum 180,000 PSI tensile strength
- 24 equally spaced clockwise teeth
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1973 - 1974 | GMC | C35/C3500 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | GMC | K15/K1500 Pickup | 396/6.5 V8 | |
| 1968 - 1969 | GMC | K25/K2500 Pickup | 396/6.5 V8 | |
| 1973 - 1974 | GMC | K25/K2500 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | GMC | K35/K3500 Pickup | 396/6.5 V8 | |
| 1970 - 1971 | GMC | K35/K3500 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | GMC | K35/K3500 Pickup | 454/7.4 V8 | |
| 1967 | Mercury | Brougham | 428/7 V8 | |
| 1966 - 1967 | Mercury | Colony Park | 410/6.7 V8 | |
| 1966 - 1968 | Mercury | Colony Park | 428/7 V8 | |
| 1965 - 1967 | Mercury | Colony Park | 427/7 V8 | |
| 1967 | Mercury | Brougham | 410/6.7 V8 | |
| 1967 | Mercury | Brougham | 427/7 V8 | |
| 1965 | Mercury | Caliente | 427/7 V8 | |
| 1966 - 1967 | Mercury | Commuter | 410/6.7 V8 | |
| 1966 - 1968 | Mercury | Commuter | 428/7 V8 | |
| 1968 | Mercury | Cougar | 427/7 V8 | |
| 1970 - 1971 | Mercury | Cougar | 429/7 V8 | |
| 1968 - 1970 | Mercury | Cougar | 428/7 V8 | |
| 1965 - 1967 | Mercury | Comet | 427/7 V8 | |
| 1965 - 1968 | Mercury | Cyclone | 427/7 V8 | |
| 1968 - 1969 | Mercury | Cyclone | 428/7 V8 | |
| 1965 - 1967 | Mercury | Commuter | 427/7 V8 | |
| 1969 | Mercury | Cougar | 302/5 V8 | |
| 1965 | Mercury | Marauder | 427/7 V8 | |
| 1967 | Mercury | Marquis | 410/6.7 V8 | |
| 1967 - 1969 | Mercury | Marquis | 428/7 V8 | |
| 1966 - 1967 | Mercury | Montclair | 410/6.7 V8 | |
| 1965 - 1967 | Mercury | Montclair | 427/7 V8 | |
| 1968 - 1969 | Mercury | Montego | 428/7 V8 | |
| 1968 | Mercury | Montego | 427/7 V8 | |
| 1970 - 1971 | Mercury | Cyclone | 429/7 V8 | |
| 1967 | Mercury | Marquis | 427/7 V8 | |
| 1966 - 1968 | Mercury | Montclair | 428/7 V8 | |
| 1965 - 1967 | Mercury | Monterey | 427/7 V8 | |
| 1966 - 1970 | Mercury | Monterey | 428/7 V8 | |
| 1970 | Mercury | Montego | 429/7 V8 | |
| 1966 - 1967 | Mercury | Park Lane | 410/6.7 V8 | |
| 1966 - 1968 | Mercury | Park Lane | 428/7 V8 | |
| 1966 - 1967 | Mercury | Monterey | 410/6.7 V8 | |
| 1965 - 1967 | Mercury | Park Lane | 427/7 V8 | |
| 1965 | Mercury | Villager | 427/7 V8 | |
| 1965 - 1968 | Ford | Custom 500 | 427/7 V8 | |
| 1965 - 1968 | Ford | Galaxie 500 | 427/7 V8 | |
| 1966 - 1970 | Ford | Custom 500 | 428/7 V8 | |
| 1969 - 1970 | Chevrolet | Nova | 396/6.5 V8 | |
| 1961 | Chevrolet | Brookwood | 409/6.7 V8 | |
| 1961 | Chevrolet | Kingswood | 409/6.7 V8 | |
| 1961 | Chevrolet | Nomad | 409/6.7 V8 | |
| 1961 | Chevrolet | Parkwood | 409/6.7 V8 | |
| 1963 | Ford | 300 | 427/7 V8 | |
| 1966 | Ford | Custom | 427/7 V8 | |
| 1968 - 1970 | Ford | Custom | 428/7 V8 | |
| 1969 | Chevrolet | Estate | 396/6.5 V8 | |
| 1969 | Chevrolet | Estate | 427/7 V8 | |
| 1970 | Chevrolet | Estate | 454/7.4 V8 | |
| 1970 | Chevrolet | Estate | 402/6.6 V8 | |
| 1969 | Chevrolet | Brookwood | 427/7 V8 | |
| 1970 - 1972 | Chevrolet | Brookwood | 454/7.4 V8 | |
| 1970 - 1972 | Chevrolet | Brookwood | 402/6.6 V8 | |
| 1968 - 1969 | Chevrolet | C10 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | C10 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | Chevrolet | C10 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | C20 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | C20 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | Chevrolet | C20 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | C30 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | C30 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | Chevrolet | C30 Pickup | 454/7.4 V8 | |
| 1967 - 1969 | Chevrolet | Camaro | 396/6.5 V8 | |
| 1969 | Chevrolet | Camaro | 427/7 V8 | |
| 1970 - 1972 | Chevrolet | Camaro | 402/6.6 V8 | |
| 1966 - 1969 | Chevrolet | Caprice | 396/6.5 V8 | |
| 1966 - 1969 | Chevrolet | Caprice | 427/7 V8 | |
| 1970 - 1976 | Chevrolet | Caprice | 454/7.4 V8 | |
| 1970 - 1972 | Chevrolet | Caprice | 402/6.6 V8 | |
| 1965 - 1970 | Chevrolet | Chevelle | 396/6.5 V8 | |
| 1970 - 1973 | Chevrolet | Chevelle | 454/7.4 V8 | |
| 1970 - 1972 | Chevrolet | Chevelle | 402/6.6 V8 | |
| 1968 | Chevrolet | Chevy II | 396/6.5 V8 | |
| 1966 - 1969 | Chevrolet | Corvette | 427/7 V8 | |
| 1965 | Chevrolet | Corvette | 396/6.5 V8 | |
| 1970 - 1974 | Chevrolet | Corvette | 454/7.4 V8 | |
| 1975 - 1980 | Chevrolet | C10 | 454/7.4 V8 | |
| 1975 - 1986 | Chevrolet | C20 | 454/7.4 V8 | |
| 1975 - 1986 | Chevrolet | C30 | 454/7.4 V8 | |
| 1976 | Chevrolet | G20 | 454/7.4 V8 | |
| 1975 - 1976 | Chevrolet | G30 | 454/7.4 V8 | |
| 1970 - 1976 | Chevrolet | Impala | 454/7.4 V8 | |
| 1976 - 1980 | Chevrolet | K10 | 454/7.4 V8 | |
| 1976 - 1978 | Chevrolet | K20 | 454/7.4 V8 | |
| 1977 - 1986 | Chevrolet | K30 | 454/7.4 V8 | |
| 1973 - 1975 | Chevrolet | Laguna | 454/7.4 V8 | |
| 1973 - 1975 | Chevrolet | Malibu | 454/7.4 V8 | |
| 1970 - 1975 | Chevrolet | Monte Carlo | 454/7.4 V8 | |
| 1987 - 1988 | Chevrolet | R30 | 454/7.4 V8 | |
| 1989 | Chevrolet | R3500 | 454/7.4 V8 | |
| 1987 - 1988 | Chevrolet | V30 | 454/7.4 V8 | |
| 1989 | Chevrolet | V3500 | 454/7.4 V8 | |
| 1975 - 1978 | GMC | C15 | 454/7.4 V8 | |
| 1979 - 1980 | GMC | C1500 | 454/7.4 V8 | |
| 1975 - 1978 | GMC | C25 | 454/7.4 V8 | |
| 1979 - 1986 | GMC | C2500 | 454/7.4 V8 | |
| 1968 - 1970 | Ford | Mustang | 428/7 V8 | |
| 1971 - 1972 | Ford | Mustang | 351/5.8 V8 | |
| 1964 - 1967 | Ford | Ranch Wagon | 427/7 V8 | |
| 1968 - 1970 | Ford | Ranch Wagon | 428/7 V8 | |
| 1963 - 1967 | Ford | Thunderbird | 427/7 V8 | |
| 1968 | Ford | Torino | 427/7 V8 | |
| 1970 - 1971 | Ford | Torino | 429/7 V8 | |
| 1963 | Ford | Thunderbird | 410/6.7 V8 | |
| 1966 - 1967 | Ford | Thunderbird | 428/7 V8 | |
| 1968 - 1969 | Ford | Torino | 428/7 V8 | |
| 1968 - 1969 | GMC | C15/C1500 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C15/C1500 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | GMC | C15/C1500 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | GMC | C25/C2500 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C25/C2500 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | GMC | C25/C2500 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | GMC | C35/C3500 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | GMC | C35/C3500 Pickup | 402/6.6 V8 | |
| 1970 - 1972 | Chevrolet | Townsman | 454/7.4 V8 | |
| 1969 | Chevrolet | Townsman | 396/6.5 V8 | |
| 1969 | Chevrolet | Townsman | 427/7 V8 | |
| 1968 - 1970 | Ford | Country Sedan | 428/7 V8 | |
| 1964 - 1966 | Ford | Country Sedan | 427/7 V8 | |
| 1964 - 1968 | Ford | Country Squire | 427/7 V8 | |
| 1971 - 1972 | Ford | Country Sedan | 429/7 V8 | |
| 1967 - 1969 | Ford | Country Squire | 428/7 V8 | |
| 1964 - 1969 | Ford | Fairlane | 427/7 V8 | |
| 1968 - 1969 | Ford | Fairlane | 428/7 V8 | |
| 1970 | Ford | Fairlane | 429/7 V8 | |
| 1965 - 1967 | Ford | Galaxie | 427/7 V8 | |
| 1968 - 1969 | Ford | Galaxie 500 | 428/7 V8 | |
| 1970 | Ford | Falcon | 429/7 V8 | |
| 1966 - 1967 | Ford | Galaxie | 428/7 V8 | |
| 1965 - 1969 | Ford | LTD | 428/7 V8 | |
| 1965 - 1968 | Ford | LTD | 427/7 V8 | |
| 1969 - 1971 | Ford | Mustang | 429/7 V8 | |
| 1968 | Ford | Mustang | 427/7 V8 | |
| 1975 - 1978 | GMC | C35 | 454/7.4 V8 | |
| 1979 - 1986 | GMC | C3500 | 454/7.4 V8 | |
| 1975 - 1976 | GMC | G25 | 454/7.4 V8 | |
| 1976 | GMC | G35 | 454/7.4 V8 | |
| 1976 | GMC | K15 | 454/7.4 V8 | |
| 1980 | GMC | K1500 | 454/7.4 V8 | |
| 1976 - 1978 | GMC | K25 | 454/7.4 V8 | |
| 1979 - 1986 | GMC | K3500 | 454/7.4 V8 | |
| 1987 - 1989 | GMC | R3500 | 454/7.4 V8 | |
| 1987 - 1989 | GMC | V3500 | 454/7.4 V8 | |
| 1961 - 1965 | Chevrolet | Bel Air | 409/6.7 V8 | |
| 1963 - 1969 | Chevrolet | Bel Air | 427/7 V8 | |
| 1965 - 1969 | Chevrolet | Bel Air | 396/6.5 V8 | |
| 1970 - 1975 | Chevrolet | Bel Air | 454/7.4 V8 | |
| 1970 - 1972 | Chevrolet | Bel Air | 402/6.6 V8 | |
| 1961 - 1965 | Chevrolet | Biscayne | 409/6.7 V8 | |
| 1963 - 1969 | Chevrolet | Biscayne | 427/7 V8 | |
| 1965 - 1969 | Chevrolet | Biscayne | 396/6.5 V8 | |
| 1973 - 1974 | Chevrolet | G10 Van | 454/7.4 V8 | |
| 1973 - 1974 | Chevrolet | G20 Van | 454/7.4 V8 | |
| 1973 - 1974 | Chevrolet | G30 Van | 454/7.4 V8 | |
| 1961 - 1965 | Chevrolet | Impala | 409/6.7 V8 | |
| 1963 - 1969 | Chevrolet | Impala | 427/7 V8 | |
| 1965 - 1969 | Chevrolet | Impala | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | Impala | 402/6.6 V8 | |
| 1968 - 1969 | Chevrolet | K10 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | K10 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | Chevrolet | K10 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | K20 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | K20 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | Chevrolet | K20 Pickup | 454/7.4 V8 | |
| 1968 - 1969 | Chevrolet | K30 Pickup | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | K30 Pickup | 402/6.6 V8 | |
| 1973 - 1974 | Chevrolet | K30 Pickup | 454/7.4 V8 | |
| 1969 | Chevrolet | Kingswood | 396/6.5 V8 | |
| 1969 | Chevrolet | Kingswood | 427/7 V8 | |
| 1970 - 1972 | Chevrolet | Kingswood | 454/7.4 V8 | |
| 1970 - 1972 | Chevrolet | Kingswood | 402/6.6 V8 | |
| 1965 - 1967 | Chevrolet | Malibu | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | Monte Carlo | 402/6.6 V8 | |
| 1970 | Chevrolet | Nova | 402/6.6 V8 | |
| 1970 - 1972 | Chevrolet | Townsman | 402/6.6 V8 | |
| 1970 - 1972 | Chevrolet | Biscayne | 454/7.4 V8 | |
| 1969 | Chevrolet | Brookwood | 396/6.5 V8 | |
| 1970 - 1972 | Chevrolet | Biscayne | 402/6.6 V8 |
Specs:
| Brand | Mr. Gasket |
|---|---|
| Emission Code | 5 |
| Finish | Polished |
| Material | 410 stainless steel |
| Product Type | HeadLock Locking Header Bolts |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
| Weight | 7 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Favorite jeans
Size: 16, Color: Lapis Sights
Great jeans. Love the fit. True to size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Must buy
Size: 12, Color: Lapis Awe
Love these for my kiddo the size is just right and they are very comfortable. They don’t get put in the dryer so I can’t say if they shrink. They seem very durable as well which is awesome.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
★★★★★ 5
The perfect jean for the "in between tween"
Size: 16 Plus, Color: Md Lara Wash
As a parent, one of my top priorities is ensuring that my daughter feels confident and comfortable in her own skin, especially as she navigates the challenging world of growing up. However, finding the perfect pair of jeans for her has always been a struggle. At the tender age of 11, the last thing I want her to experience is frustration and discomfort when trying on clothes.
We've encountered the all-too-common issue of jeans that fit well on the legs but are impossible to zip up and button, leaving my daughter feeling self-conscious and disheartened. Despite her not being plus-sized, finding jeans in her size that didn't constrict or make her feel "fat" (a term I use delicately) seemed like an impossible task.
Enter these jeans. In a moment of trial and error, I decided to try a plus-size option, and to our delight, it worked like a charm. My daughter slipped into these jeans effortlessly, and for the first time, she didn't have to struggle or squeeze into them. The fit was perfect, and she felt like a million dollars.
The transformation in her confidence was truly remarkable. No longer did she feel insecure about her body or her clothes. Instead, she walked tall, radiating beauty and confidence. These jeans have become a wardrobe staple for her, and I couldn't be happier with the way they've positively impacted her self-esteem.
If your daughter is going through a similar experience, I wholeheartedly recommend giving these jeans a try. They're not only affordable but also incredibly inclusive in their sizing, catering to a diverse range of body types. Don't let the frustration of finding the right fit dampen your daughter's spirits. With these jeans, she'll feel empowered and beautiful, just as every young girl should.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2024
★★★★★ 5
Jeans
Size: 10, Color: Victory Blue Wash
Good quality jeans. True to size. Wash well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Cute and durable
Size: 10 Slim, Color: Md Lara Wash
Cute jeans for my granddaughter. They fit well and wash well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026