The Washer,flat, cataloged under National Stock Number 5310-01-021-8930, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lift-Tech Intl Inc Crane and Hoist Opns. 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 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 | 5310-01-021-8930 |
| Primary Part Number | 113401-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lift-Tech Intl Inc Crane and Hoist Opns |
| Status | ACTIVE |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Heat Treatment | ANNEALED |
| Hardness Rating | 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1075 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.760 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Thickness | 0.0478 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 |
|---|---|
| 113401-1 PRIMARY | Lift-Tech Intl Inc Crane and Hoist Opns (USA) |
NSN 5310-01-021-8930 is a Washer,flat, manufactured by Lift-Tech Intl Inc Crane and Hoist Opns, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-021-8930 has 1 manufacturer part number on file: 113401-1 (Lift-Tech Intl Inc Crane and Hoist Opns).
1 possible match (shared part number, not a government interchangeability claim): 5841-01-142-1872. Verify interchangeability with system specifications before substitution.
Key specifications for 113401-1: Overall Diameter: 2.000 INCHES NOMINAL IN; Heat Treatment: ANNEALED; Hardness Rating: 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.