The Washer,flat, cataloged under National Stock Number 5310-01-249-0240, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-249-0240 |
| Primary Part Number | WC22S-6 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Inside Left Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Precious Material and Location | OUTSIDE SURFACE SILVER |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.375 INCHES NOMINAL IN |
| Thickness | 0.071 INCHES MINIMUM AND 0.085 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 |
|---|---|
| WC22S-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| SL20708S6 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| AS102584-S6 | Anillo Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| WZZS-S6 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HS5393S6 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| HS5393S6 | 7/2 Vendor item drawing reference The Boeing Company |
NSN 5310-01-249-0240 is a Washer,flat, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-249-0240 has 3 manufacturer part numbers on file: WC22S-6 (Sps Technologies, Llc Dba PB Fasteners), SL20708S6 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), AS102584-S6 (Anillo Industries Llc).
Key specifications for WC22S-6: Overall Diameter: 0.750 INCHES NOMINAL IN; Hardness Rating: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Cross-Sectional Shape Style: RECTANGULAR; Inside Left Corner Chamfer Angle: 45.0 DEGREES NOMINAL. 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.