Filter by
Thread Size
Locking Type
Hex Nut Profile
Thread Fit
Thread Type
Drive Style
Thread Direction
Thread Spacing
DFARS Compliance
About Nuts, Materials, and Finishes
More
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 distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. These nuts may be mildly magnetic. Height includes the flange.
A286 stainless steel nuts cannot be reused. Those with lubricant thread onto bolts smoothly.
For technical drawings and 3-D models, click on a part number.
Flange | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size  | Wd. | Ht. | Dia. | Thick. | Specifications Met | Locking Type | Pkg. Qty. | Pkg. | |
Silver-Plated A286 Stainless Steel | |||||||||
| 4-40 | 5/32" | 1/8" | 0.206" | 0.03" | MS21043-04 | Distorted Thread | 5 | 000000000 | 000000 |
| 6-32 | 3/16" | 9/64" | 0.244" | 0.03" | MS21043-06 | Distorted Thread | 5 | 000000000 | 0000 |
| 8-32 | 7/32" | 3/16" | 0.29" | 0.03" | MS21043-08 | Distorted Thread | 5 | 000000000 | 00000 |
| 10-32 | 1/4" | 3/16" | 0.33" | 0.03" | MS21043-3 | Distorted Thread | 5 | 000000000 | 0000 |
| 1/4"-28 | 5/16" | 7/32" | 0.42" | 0.04" | MS21043-4 | Distorted Thread | 5 | 000000000 | 0000 |
| 5/16"-24 | 3/8" | 17/64" | 0.52" | 0.04" | MS21043-5 | Distorted Thread | 1 | 000000000 | 0000 |
| 3/8"-24 | 7/16" | 9/32" | 0.62" | 0.04" | MS21043-6 | Distorted Thread | 1 | 000000000 | 0000 |
A286 Stainless Steel with Lubricant | |||||||||
| 2-56 | 1/8" | 3/32" | 0.167" | 0.01" | NAS1291C02M | Distorted Thread | 5 | 000000000 | 00000 |
| 4-40 | 5/32" | 1/8" | 0.206" | 0.01" | NAS1291C04M | Distorted Thread | 1 | 000000000 | 0000 |
| 6-32 | 3/16" | 9/64" | 0.244" | 0.01" | NAS1291C06M | Distorted Thread | 1 | 000000000 | 0000 |
| 8-32 | 7/32" | 3/16" | 0.29" | 0.02" | NAS1291C08M | Distorted Thread | 1 | 000000000 | 0000 |
| 10-32 | 1/4" | 3/16" | 0.33" | 0.02" | NAS1291C3M | Distorted Thread | 1 | 000000000 | 0000 |
| 1/4"-28 | 5/16" | 7/32" | 0.42" | 0.02" | NAS1291C4M | Distorted Thread | 1 | 000000000 | 0000 |
| 5/16"-24 | 3/8" | 17/64" | 0.52" | 0.03" | NAS1291C5M | Distorted Thread | 1 | 000000000 | 0000 |
| 3/8"-24 | 7/16" | 9/32" | 0.62" | 0.03" | NAS1291C6M | Distorted Thread | 1 | 000000000 | 00000 |
| 7/16"-20 | 1/2" | 21/64" | 0.708" | 0.04" | NAS1291C7M | Distorted Thread | 1 | 000000000 | 00000 |
| 1/2"-20 | 9/16" | 13/32" | 0.814" | 0.04" | NAS1291C8M | Distorted Thread | 1 | 000000000 | 00000 |