The Washer,flat, cataloged under National Stock Number 5310-01-400-3741, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Champion Road Machinery Inc Pro-Pav Div. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-400-3741 |
| Primary Part Number | 13071840 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Champion Road Machinery Inc Pro-Pav Div |
| Status | ACTIVE |
| Width Across Flats | 0.940 INCHES MINIMUM AND 1.060 INCHES MAXIMUM IN |
| Length | 1.320 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A569 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | RECTANGULAR |
| Material | STEEL COMP 1009 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.435 INCHES MINIMUM AND 0.441 INCHES MAXIMUM IN |
| Thickness | 0.060 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 |
|---|---|
| 13071840 PRIMARY | Champion Road Machinery Inc Pro-Pav Div (USA) |
| Reference | Meaning |
|---|---|
| 13071840 | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand Div Road Development |
NSN 5310-01-400-3741 is a Washer,flat, manufactured by Champion Road Machinery Inc Pro-Pav Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-400-3741 has 1 manufacturer part number on file: 13071840 (Champion Road Machinery Inc Pro-Pav Div).
Key specifications for 13071840: Width Across Flats: 0.940 INCHES MINIMUM AND 1.060 INCHES MAXIMUM IN; Length: 1.320 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN; Material Document and Classification: ASTM A569 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.
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.