The Washer,flat, cataloged under National Stock Number 5310-00-276-3487, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 8 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-276-3487 |
| Primary Part Number | 7700742 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Overall Diameter | 2.250 INCHES NOMINAL IN |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1060 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.250 INCHES NOMINAL IN |
| Thickness | 0.062 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 |
|---|---|
| 7700742 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 1MT1671 PRIMARY | Load King, Llc Div Load King (USA) |
| Reference | Meaning |
|---|---|
| W1-8X1 1-4 | 5/9 Secondary reference Rogers Brothers Corp |
| 16T1308 | 3/2 Design control — primary reference U.S. Government activity |
| 20T5135 | 3/2 Design control — primary reference U.S. Government activity |
| STA3-3 | 5/9 Secondary reference Great Dane Trailers Inc |
| 16T1310 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-276-3487 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-276-3487 has 2 manufacturer part numbers on file: 7700742 (U S Army Tank Automotive Command Amsta-Im-Mm), 1MT1671 (Load King, Llc Div Load King).
2 possible matches (shared part number, not a government interchangeability claim): 3010-01-247-1558, 5342-01-442-8343. Verify interchangeability with system specifications before substitution.
Key specifications for 7700742: Overall Diameter: 2.250 INCHES NOMINAL IN; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.