The Washer,flat, cataloged under National Stock Number 5310-00-445-8555, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-445-8555 |
| Primary Part Number | 40A39802-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Overall Diameter | 1.100 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5515 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5516 ASSN STD 1ST MATERIAL RESPONSE AND AMS 5517 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5518 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5519 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OR STEEL COMP 301 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.750 INCHES NOMINAL IN |
| Thickness | 0.0135 INCHES MINIMUM AND 0.0165 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 |
|---|---|
| 40A39802-3 PRIMARY | Triumph Engine Control Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 40A39802-3 | 5/9 Secondary reference Colt Industries Inc Holley Automotive Div |
NSN 5310-00-445-8555 is a Washer,flat, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-445-8555 has 1 manufacturer part number on file: 40A39802-3 (Triumph Engine Control Systems Llc).
Key specifications for 40A39802-3: Overall Diameter: 1.100 INCHES MINIMUM AND 1.120 INCHES MAXIMUM IN; Material Document and Classification: AMS 5515 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5516 ASSN STD 1ST MATERIAL RESPONSE AND AMS 5517 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5518 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5519 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.