The Washer,flat, cataloged under National Stock Number 5310-00-017-2812, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-017-2812 |
| Primary Part Number | 172812 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Overall Diameter | 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Departure From Cited Document | AS MODIFIED BY SURFACE TREATMENT |
| Nondefinitive Spec/std Data | A TYPE |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.427 INCHES MINIMUM AND 1.447 INCHES MAXIMUM IN |
| Thickness | 0.1562 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 |
|---|---|
| 172812 | Army Weapons Command Attn Amswe-Ree-S (USA) |
| Reference | Meaning |
|---|---|
| MILW1085TYPEA | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-017-2812 is a Washer,flat, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-017-2812 has 1 manufacturer part number on file: 172812 (Army Weapons Command Attn Amswe-Ree-S).
3 possible matches (shared part number, not a government interchangeability claim): 1620-00-859-2691, 1680-00-943-7820, 6750-01-427-1785. Verify interchangeability with system specifications before substitution.
Key specifications for 172812: Overall Diameter: 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Departure From Cited Document: AS MODIFIED BY SURFACE TREATMENT; Nondefinitive Spec/std Data: A TYPE. 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.