The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-00-975-5182, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-975-5182 |
| Primary Part Number | 37C300385P102 |
| Item Name | Nut,plain,extended Washer,hexago |
| 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 | 2.763 INCHES MINIMUM AND 2.768 INCHES MAXIMUM IN |
| Width Across Flats | 1.615 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.162 INCHES MINIMUM AND 0.172 INCHES MAXIMUM WASHER IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.125 INCHES IN |
| Counterbore Diameter | 2.200 INCHES MINIMUM AND 2.220 INCHES MAXIMUM WASHER IN |
| Surface Treatment | OXIDE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4340 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 |
|---|---|
| 37C300385P102 | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp (USA) |
| 37C300385P102 | Palmer Manufacturing Co., Llc Dba Pursuit Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 37C300385P102 | 5/9 Secondary reference General Electric Company |
| 37C300385P102 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-975-5182 is a Nut,plain,extended Washer,hexago, 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 5310-00-975-5182 has 2 manufacturer part numbers on file: 37C300385P102 (General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp), 37C300385P102 (Palmer Manufacturing Co., Llc Dba Pursuit Aerospace).
Key specifications for 37C300385P102: Overall Height: 0.690 INCHES MINIMUM AND 0.710 INCHES MAXIMUM IN; Washer Outside Diameter: 2.763 INCHES MINIMUM AND 2.768 INCHES MAXIMUM IN; Width Across Flats: 1.615 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2485 ASSN STD 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.