The Washer,flat, cataloged under National Stock Number 5310-00-810-1530, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-810-1530 |
| Primary Part Number | 506595 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Overall Diameter | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | AISI ASSN STD 1ST MATERIAL RESPONSE AND AMS 5640 ASSN STD 2ND MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE AND AMS 5639 ASSN STD 3RD MATERIAL RESPONSE OR AISI ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.126 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Thickness | 0.028 INCHES MINIMUM AND 0.032 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 |
|---|---|
| 506595 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 506595 | Alinabal Holdings Corporation Div Engineered Products Group (USA) |
| 506595 | Enjet Aero Manchester Llc (USA) |
| Reference | Meaning |
|---|---|
| 146-250525-00 | C/1 Advisory reference — outside the item-of-supply concept Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co |
NSN 5310-00-810-1530 is a Washer,flat, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-810-1530 has 3 manufacturer part numbers on file: 506595 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 506595 (Alinabal Holdings Corporation Div Engineered Products Group), 506595 (Enjet Aero Manchester Llc).
Key specifications for 506595: Overall Diameter: 0.250 INCHES NOMINAL IN; Material Document and Classification: AISI ASSN STD 1ST MATERIAL RESPONSE AND AMS 5640 ASSN STD 2ND MATERIAL RESPONSE OR AISI ASSN STD 2ND MATERIAL RESPONSE AND AMS 5639 ASSN STD 3RD MATERIAL RESPONSE OR AISI ASSN STD 3RD 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.