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| Locknut | Rivet Mount |
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Flange Diameter Flange Diameter |
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Locking Type Locking Type |
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Drive Style Drive Style |
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| External Hex | External 12- Point |
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Hex Nut Profile Hex Nut Profile |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (DefenseAcquisition Regulations Supplement) |
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Lubrication Lubrication |
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About Nuts, Materials, and Finishes
More
High-Temperature High-Strength
A286 Stainless Steel Hex Nuts
Often used to fasten parts in engines and turbines, these nuts are comparable in strength to Grade 8 steel. They have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Stainless Steel Distorted-Thread Flange Locknuts
These flange locknuts have excellent resistance to chemicals and salt water. They have an irregularly-shaped thread that grips the bolt for a stronger hold than nylon-insert flange locknuts. A flange that distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. They're not reusable. Nuts may be mildly magnetic. Height includes the flange.
For technical drawings and 3-D models, click on a part number.
Flange | ||||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Wd. | Ht. | Dia. | Thick. | Specifications Met | Pkg. Qty. | Pkg. | |
A286 Stainless Steel | ||||||||
| 2-56 | 1/8" | 3/32" | 0.167" | 0.01" | NAS1291C02M | 5 | 000000000 | 000000 |
Silver-Plated A286 Stainless Steel | ||||||||
| 4-40 | 5/32" | 1/8" | 0.206" | 0.03" | MS21043-04 | 1 | 000000000 | 0000 |
| 6-32 | 3/16" | 9/64" | 0.244" | 0.03" | MS21043-06 | 5 | 000000000 | 0000 |
| 8-32 | 7/32" | 3/16" | 0.29" | 0.03" | MS21043-08 | 1 | 000000000 | 0000 |
| 10-32 | 1/4" | 3/16" | 0.33" | 0.03" | MS21043-3 | 1 | 000000000 | 0000 |
| 1/4"-28 | 5/16" | 7/32" | 0.42" | 0.04" | MS21043-4 | 5 | 000000000 | 0000 |
| 5/16"-24 | 3/8" | 17/64" | 0.52" | 0.04" | MS21043-5 | 1 | 000000000 | 0000 |
| 3/8"-24 | 7/16" | 9/32" | 0.62" | 0.04" | MS21043-6 | 1 | 000000000 | 0000 |
Stainless Steel High-Torque 12-Point Flange Nuts
These flange nuts have excellent resistance to chemicals and salt water. With more points of contact than a hex, they allow you to get a better grip for more driver torque. The flange distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. Height includes the flange.
For technical drawings and 3-D models, click on a part number.
Flange | ||||||
|---|---|---|---|---|---|---|
| Thread Size | Wd. | Ht. | Dia. | Thick. | Each | |
A286 Stainless Steel | ||||||
| 1/4"-20 | 5/16" | 19/64" | 7/16" | 0.06" | 000000000 | 00000 |
| 1/4"-28 | 5/16" | 19/64" | 7/16" | 0.06" | 000000000 | 0000 |
| 5/16"-18 | 3/8" | 11/32" | 17/32" | 0.08" | 000000000 | 0000 |
| 5/16"-24 | 3/8" | 11/32" | 17/32" | 0.08" | 000000000 | 0000 |
| 3/8"-16 | 7/16" | 25/64" | 5/8" | 0.09" | 000000000 | 0000 |
| 3/8"-24 | 7/16" | 25/64" | 5/8" | 0.09" | 000000000 | 0000 |
| 7/16"-14 | 1/2" | 7/16" | 45/64" | 0.11" | 000000000 | 0000 |
| 7/16"-20 | 1/2" | 7/16" | 45/64" | 0.11" | 000000000 | 0000 |
| 1/2"-13 | 9/16" | 33/64" | 53/64" | 0.13" | 000000000 | 0000 |
| 1/2"-20 | 9/16" | 33/64" | 53/64" | 0.13" | 000000000 | 0000 |
| 9/16"-18 | 11/16" | 5/8" | 31/32" | 0.13" | 000000000 | 0000 |
Thread | Flange | ||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Dia. | Thick., mm | Each | |
A286 Stainless Steel | |||||||
| M6 | 1 | 8 | 6.1 | 10.5 | 1.6 | 000000000 | 00000 |
| M7 | 1 | 9 | 7 | 12 | 1.6 | 000000000 | 0000 |
| M8 | 1 | 10 | 8.1 | 15.9 | 1.6 | 000000000 | 0000 |
| M8 | 1.25 | 10 | 8.1 | 13.6 | 1.6 | 000000000 | 0000 |
| M9 | 1 | 11 | 9.5 | 15.6 | 1.6 | 000000000 | 0000 |
| M10 | 1 | 12 | 10.2 | 17.8 | 3.2 | 000000000 | 0000 |
| M10 | 1.25 | 12 | 10.2 | 17.8 | 3.2 | 000000000 | 0000 |
| M10 | 1.5 | 12 | 10.2 | 17.8 | 3.2 | 000000000 | 0000 |
| M11 | 1.25 | 13 | 11 | 17.8 | 3.2 | 000000000 | 0000 |
| M11 | 1.25 | 14 | 13 | 20.9 | 3.2 | 000000000 | 0000 |
| M12 | 1 | 14 | 12.8 | 19.1 | 3.2 | 000000000 | 0000 |
| M12 | 1.25 | 14 | 12.8 | 19.1 | 3.2 | 000000000 | 0000 |
| M12 | 1.25 | 14 | 12.8 | 20.9 | 3.2 | 000000000 | 0000 |
| M12 | 1.75 | 14 | 12.8 | 20.9 | 3.2 | 000000000 | 0000 |
Mil. Spec. Rivet-Mount Nuts
Create threads in hard-to-work areas—where you can’t reach the back of a workpiece, or material is too thin to be tapped. For a strong grip, these nuts have distorted threads that increase friction with bolts. Because they mount with two rivets, they won’t spin when you’re tightening screws. However, these nuts do move inside their retainers, which lets you install bolts at a slight angle; use them to align with off-center parts. All meet military guidelines for dimensions and material.
A286 stainless steel nuts are corrosion resistant. Silver-plated stainless steel nuts withstand temperatures up to 800° F. The silver plating also adds lubricity and prevents seizing caused by friction between nuts and bolts.
Lubricated nuts thread onto bolts smoothly.
For technical drawings and 3-D models, click on a part number.
Base | Barrel | Mounting | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | Thick. | Dia. | Ht. | No. of Holes | Hole Dia. | Hole Ctr.-to-Ctr. | Specifications Met | Each | |
A286 Stainless Steel—Lubricated | |||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 0.141" | 1/16" | 2 | 0.098" | 13/32" | MS21076L04N | 000000000 | 00000 |
| 6-32 | 11/16" | 11/32" | 3/32" | 0.156" | 5/64" | 2 | 0.098" | 7/16" | MS21076L06N | 000000000 | 0000 |
| 6-32 | 61/64" | 13/32" | 1/32" | 0.156" | 11/64" | 2 | 0.098" | 11/16" | MS21060L06 | 000000000 | 0000 |
| 8-32 | 45/64" | 23/64" | 3/32" | 0.168" | 5/32" | 2 | 0.098" | 15/32" | MS21076L08N | 000000000 | 0000 |
| 8-32 | 61/64" | 13/32" | 1/32" | 0.168" | 7/32" | 2 | 0.098" | 11/16" | MS21060L08 | 000000000 | 0000 |
| 10-32 | 47/64" | 13/32" | 3/32" | 0.194" | 5/32" | 2 | 0.098" | 1/2" | MS21076L3N | 000000000 | 0000 |
| 10-32 | 61/64" | 13/32" | 1/32" | 0.194" | 7/32" | 2 | 0.098" | 11/16" | MS21060L3 | 000000000 | 0000 |
| 1/4"-28 | 51/64" | 1/2" | 3/32" | 0.254" | 3/16" | 2 | 0.098" | 9/16" | MS21076L4N | 000000000 | 0000 |
| 1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.254" | 1/4" | 2 | 0.098" | 1" | MS21060L4 | 000000000 | 0000 |
| 5/16"-24 | 1 1/64" | 37/64" | 7/64" | 0.317" | 7/32" | 2 | 0.13" | 23/32" | MS21076L5N | 000000000 | 00000 |
| 5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.317" | 9/32" | 2 | 0.13" | 1" | MS21060L5 | 000000000 | 00000 |
| 3/8"-24 | 1 19/64" | 43/64" | 1/16" | 0.379" | 19/64" | 2 | 0.13" | 1" | MS21060L6 | 000000000 | 00000 |
Silver-Plated A286 Stainless Steel—Unlubricated | |||||||||||
| 4-40 | 21/32" | 5/16" | 3/32" | 0.141" | 1/16" | 2 | 0.098" | 13/32" | MS21076-04N | 000000000 | 0000 |
| 4-40 | 61/64" | 13/32" | 1/32" | 0.141" | 9/64" | 2 | 0.098" | 11/16" | MS21060-04 | 000000000 | 0000 |
| 6-32 | 61/64" | 13/32" | 1/32" | 0.156" | 11/64" | 2 | 0.098" | 11/16" | MS21060-06 | 000000000 | 0000 |
| 8-32 | 45/64" | 23/64" | 3/32" | 0.168" | 5/32" | 2 | 0.098" | 15/32" | MS21076-08N | 000000000 | 0000 |
| 8-32 | 61/64" | 13/32" | 1/32" | 0.168" | 7/32" | 2 | 0.098" | 11/16" | MS21060-08 | 000000000 | 0000 |
| 10-32 | 47/64" | 13/32" | 3/32" | 0.194" | 5/32" | 2 | 0.098" | 1/2" | MS21076-3N | 000000000 | 0000 |
| 10-32 | 61/64" | 13/32" | 1/32" | 0.194" | 7/32" | 2 | 0.098" | 11/16" | MS21060-3 | 000000000 | 0000 |
| 1/4"-28 | 51/64" | 1/2" | 3/32" | 0.254" | 3/16" | 2 | 0.098" | 9/16" | MS21076-4N | 000000000 | 00000 |
| 1/4"-28 | 1 19/64" | 33/64" | 1/32" | 0.254" | 1/4" | 2 | 0.098" | 1" | MS21060-4 | 000000000 | 00000 |
| 5/16"-24 | 1 1/64" | 37/64" | 7/64" | 0.317" | 7/32" | 2 | 0.13" | 23/32" | MS21076-5N | 000000000 | 00000 |
| 5/16"-24 | 1 19/64" | 39/64" | 3/64" | 0.317" | 9/32" | 2 | 0.13" | 1" | MS21060-5 | 000000000 | 00000 |
| 3/8"-24 | 1 19/64" | 43/64" | 1/16" | 0.379" | 19/64" | 2 | 0.13" | 1" | MS21060-6 | 000000000 | 00000 |