The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-178-5681, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bristol Industries, Llc. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-178-5681 |
| Primary Part Number | 9633M40P01 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Plate Thickness | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Nut Length | 0.597 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | GEN.ELEC.-50TF7 CL-F MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Plate Width | 0.435 INCHES NOMINAL IN |
| Gripping Prong Length | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Gripping Prong Quantity | 1 |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.235 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment | SILVER OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Nut Mounting Provision | GRIPPING PRONGS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 9633M40P01 PRIMARY | Bristol Industries, Llc (USA) |
| 9633M40P01 | General Electric Company (USA) |
| K29756-4-1 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| K29756-4-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-178-5681 is a Nut,self-Locking,plate, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-178-5681 has 3 manufacturer part numbers on file: 9633M40P01 (Bristol Industries, Llc), 9633M40P01 (General Electric Company), K29756-4-1 (Howmet Global Fastening Systems Inc).
Key specifications for 9633M40P01: Plate Thickness: 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN; Nut Length: 0.597 INCHES NOMINAL IN; Surface Treatment Document and Classification: GEN.ELEC.-50TF7 CL-F MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF. 18 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.