The Washer,flat, cataloged under National Stock Number 5310-01-608-3850, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-608-3850 |
| Primary Part Number | 33829 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastenal Company Dba Fastenal Co |
| Status | ACTIVE |
| Surface Treatment Document and Classification | F-100,PL20,TY I,GR 2,CL B MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 3.688 INCHES MINIMUM AND 3.813 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM F436 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 | 2.130 INCHES MINIMUM AND 2.193 INCHES MAXIMUM IN |
| Thickness | 0.178 INCHES MINIMUM AND 0.196 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 |
NSN 5310-01-608-3850 is a Washer,flat, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-608-3850 has 3 manufacturer part numbers on file: 3926218 (Oshkosh Defense Llc), 33829 (Fastenal Company Div Oshk), 33829 (Fastenal Company Dba Fastenal Co).
1 possible match (shared part number, not a government interchangeability claim): 5210-01-705-5968. Verify interchangeability with system specifications before substitution.
Key specifications for 33829: Surface Treatment Document and Classification: F-100,PL20,TY I,GR 2,CL B MFR REF SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 3.688 INCHES MINIMUM AND 3.813 INCHES MAXIMUM IN; Material Document and Classification: ASTM F436 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.