The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-913-2735, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-913-2735 |
| Primary Part Number | R1185P004B |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp |
| Status | ACTIVE |
| Washer Outside Diameter | 0.428 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN |
| Width Across Flats | 0.367 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 400.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.060 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5024 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1137 OVERALL |
| 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 |
|---|---|
| 21C1592-24 | General Electric Company (USA) |
| R1185P004B PRIMARY | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp (USA) |
| Reference | Meaning |
|---|---|
| 52Z6284-0 | 5/9 Secondary reference Harvard Industries Inc |
| R1185P004B | 5/9 Secondary reference Harvard Industries Inc |
| R1185P004B | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5310-00-913-2735 is a Nut,self-Locking,extended Washer, manufactured by General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-913-2735 has 2 manufacturer part numbers on file: 21C1592-24 (General Electric Company), R1185P004B (General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp).
Key specifications for R1185P004B: Overall Height: 0.314 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN; Washer Outside Diameter: 0.428 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN; Width Across Flats: 0.367 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 15 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.