The Washer,flat, cataloged under National Stock Number 5310-01-235-4614, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-235-4614 |
| Primary Part Number | W101-4 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.480 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059,COND HARD OR HALF HARD MIL SPEC SINGLE MATERIAL RESPONSE OR ASTM A177,COND HARD OR HALF HARD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.322 INCHES MINIMUM AND 0.326 INCHES MAXIMUM IN |
| Thickness | 0.023 INCHES MINIMUM AND 0.027 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 |
|---|---|
| W101-4 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| D747-12 | Huck International, Inc. Div Huck Products Division (USA) |
| Reference | Meaning |
|---|---|
| 993336-5 | 3/2 Design control — primary reference U.S. Government activity |
| D747-12 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-235-4614 is a Washer,flat, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-235-4614 has 2 manufacturer part numbers on file: W101-4 (Fastener Innovation Technology, Inc. Dba F I T), D747-12 (Huck International, Inc. Div Huck Products Division).
Key specifications for W101-4: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.480 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059,COND HARD OR HALF HARD MIL SPEC SINGLE MATERIAL RESPONSE OR ASTM A177,COND HARD OR HALF HARD ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.