The Washer,flat, cataloged under National Stock Number 5310-01-234-3104, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-234-3104 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 1.000 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | SQUARE |
| Material | RUBBER CHLOROPRENE CLASS CR OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.438 INCHES NOMINAL IN |
| Thickness | 0.0625 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 |
| Reference | Meaning |
|---|---|
| 4W-3355-2 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5W-33551-2 | 5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
| E1-7496 ITEM 30 | C/1 Advisory reference — outside the item-of-supply concept Fm Af, Llc Dba American Fan Company |
| 4W-33551-2 | C/1 Advisory reference — outside the item-of-supply concept Fm Af, Llc Dba American Fan Company |
| 9W-34009 PIECE 14 | 5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
| E1-7496-1 ITEM | C/1 Advisory reference — outside the item-of-supply concept Fm Af, Llc Dba American Fan Company |
| 4W-33551-2 | 3/9 Design control — primary reference New Philadelphia Fan Co Buffalo Forge Marine Fans |
NSN 5310-01-234-3104 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-295-4716. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-234-3104: Width Across Flats: 1.000 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: SQUARE; Material: RUBBER CHLOROPRENE CLASS CR OVERALL. 7 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.