The Washer,flat, cataloged under National Stock Number 5310-01-162-7912, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-162-7912 |
| Primary Part Number | 11562303 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | GM 4342M CODE 20 U32,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OR GM 4342M CODE 20M U32,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 24.8 MILLIMETERS MINIMUM AND 25.4 MILLIMETERS MAXIMUM MM |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1055 OVERALL |
| Center Hole Shape Style | ROUND |
| Thickness | 2.35 MILLIMETERS MINIMUM AND 2.70 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 11562303 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| 50028706 | Rbsl Washington (GBR) |
| Reference | Meaning |
|---|---|
| 8C0566 | C/1 Advisory reference — outside the item-of-supply concept Caterpillar Inc Div Caterpillar Defense |
| 1727059 | 5/9 Secondary reference General Motors Llc Dba General Motors Llc |
| 1727059 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 50028706 | 5/9 Secondary reference Baes Gcs Terrier Ssc 3 Project |
NSN 5310-01-162-7912 is a Washer,flat, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-162-7912 has 2 manufacturer part numbers on file: 11562303 (General Motors Llc Dba General Motors Llc), 50028706 (Rbsl Washington).
Key specifications for 11562303: Surface Treatment Document and Classification: GM 4342M CODE 20 U32,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OR GM 4342M CODE 20M U32,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 24.8 MILLIMETERS MINIMUM AND 25.4 MILLIMETERS MAXIMUM MM; Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 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.