Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
Promo Codes Available:
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
4.5 ★★★★★
Based on 524 reviews
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Product Reviews
★★★★★ 5
My fav
Size: 10 Little Kid, Color: Rose Glitter W/Strap
My daughters have had have these campana shoes in every size and every color, i love them and they do too, they are light, comfy and cute
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2024
★★★★★ 1
Arrived used for the second time.
Size: 10 Little Kid, Color: Rose Glitter W/Strap
I love Melissa sandals. The product is good, but it arrived used for the second time. It is poor store management.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Fantastic
Size: 8.5, Color: Ginger Shortbread
Great shoes!! Look fantastic
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 5
Me encantas
Size: 7, Color: Perfect Black
Suaves
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Reviewed in the United States on February 4, 2026
★★★★★ 1
It has to be more wearable at all times, and not worry about having pain in the foot
Size: 7, Color: Walnut, Size: 7, Color: Walnut
I love the style and look 👀 on the outside, but unfortunately, it's not worth $250 for this flip-flop sandal. It cost me a blister just for wearing it for 15 minutes on Thursday afternoon. I want to return it, but I threw the original boxes away.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026