The Washer,flat, cataloged under National Stock Number 5310-01-657-4071, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is B.w. Elliott Manufacturing Co., Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-657-4071 |
| Primary Part Number | A-624-20161-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | B.w. Elliott Manufacturing Co., Llc |
| Status | ACTIVE |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.562 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 |
|---|---|
| 805-20172 ITEM 22 | B.w. Elliott Manufacturing Co., Llc (USA) |
| A-624-20161-1 PRIMARY | B.w. Elliott Manufacturing Co., Llc (USA) |
| Reference | Meaning |
|---|---|
| 805-20172 | D/9 Drawing number reference only B.w. Elliott Manufacturing Co., Llc |
NSN 5310-01-657-4071 is a Washer,flat, manufactured by B.w. Elliott Manufacturing Co., Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-657-4071 has 2 manufacturer part numbers on file: 805-20172 ITEM 22 (B.w. Elliott Manufacturing Co., Llc), A-624-20161-1 (B.w. Elliott Manufacturing Co., Llc).
Key specifications for A-624-20161-1: Overall Diameter: 1.000 INCHES NOMINAL IN; Cross-Sectional Shape Style: BLANK RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: SPECIAL WASHER. 6 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.