The Washer,flat, cataloged under National Stock Number 5310-01-061-2995, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-061-2995 |
| Primary Part Number | 54060 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Hardness Rating | 50.0 DUROMETER NOMINAL |
| Material Document and Classification | MIL-G-1149 TY 1 CL1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | RUBBER SYNTHETIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.469 INCHES NOMINAL IN |
| Thickness | 0.030 INCHES NOMINAL IN |
| 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 |
|---|---|
| 887B054060 | Northrop Grumman Systems Corporation (USA) |
| 54060 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 887B054060 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
NSN 5310-01-061-2995 is a Washer,flat, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-061-2995 has 2 manufacturer part numbers on file: 887B054060 (Northrop Grumman Systems Corporation), 54060 (L3 Technologies, Inc. Div L3 Keo).
3 possible matches (shared part number, not a government interchangeability claim): 5950-01-395-3708, 5340-01-644-8369, 5975-01-730-9522. Verify interchangeability with system specifications before substitution.
Key specifications for 54060: Overall Diameter: 1.000 INCHES NOMINAL IN; Hardness Rating: 50.0 DUROMETER NOMINAL; Material Document and Classification: MIL-G-1149 TY 1 CL1 MIL SPEC 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.
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.