The Washer,flat, cataloged under National Stock Number 5310-00-291-2958, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-291-2958 |
| Primary Part Number | 5186577 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | CANCELLED |
| Overall Diameter | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Hardness Rating | 70.0 DUROMETER NOMINAL |
| Material Document and Classification | AMS 3228 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | RUBBER SYNTHETIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.537 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN |
| Thickness | 0.121 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5186577 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| 36144-0032 PRIMARY | Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc (USA) |
| Reference | Meaning |
|---|---|
| 0X8677 | 5/9 Secondary reference General Motors Corp |
| 5186577 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 5186577 | 5/1 Secondary reference Terex Equipment Ltd Div Construction Equipment |
| K-5186577 | 5/9 Secondary reference Korody-Colyer Corp a Cr Industries Co |
| PC5186577 | 5/9 Secondary reference Power Components (deutschland) Gmbh |
| 0X8677 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 5310002912958 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 5186577 | 5/2 Secondary reference U.S. Government activity |
| 5184302 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 5310002912958 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5186577 | 5/9 Secondary reference General Motors Corp |
| 5184302 | 5/9 Secondary reference General Motors Corp |
NSN 5310-00-291-2958 is a Washer,flat, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-291-2958 has 2 manufacturer part numbers on file: 5186577 (Rolls-Royce Solutions America Inc), 36144-0032 (Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-00-774-9545. Verify interchangeability with system specifications before substitution.
Key specifications for 5186577: Overall Diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN; Hardness Rating: 70.0 DUROMETER NOMINAL; Material Document and Classification: AMS 3228 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 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.
NSN 5310-00-291-2958 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.