The Washer,flat, cataloged under National Stock Number 5310-01-413-5136, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-413-5136 |
| Primary Part Number | HW1-3/4 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 1.462 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM F844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.809 INCHES MINIMUM AND 0.842 INCHES MAXIMUM IN |
| Thickness | 0.108 INCHES MINIMUM AND 0.160 INCHES MAXIMUM 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 |
|---|---|
| 845-6603141-28 | Naval Sea Systems Command (USA) |
| HW1-3/4 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 122-2404761 PC 53 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 122-2404752 PC 34 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3/4 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-413-5136 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-413-5136 has 2 manufacturer part numbers on file: 845-6603141-28 (Naval Sea Systems Command), HW1-3/4 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-481-8123. Verify interchangeability with system specifications before substitution.
Key specifications for HW1-3/4: Overall Diameter: 1.462 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN; Material Document and Classification: ASTM F844 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.