The Washer,flat, cataloged under National Stock Number 5310-01-686-3185, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carapace Armor Technology, Llc Dba Carapace Armor Technology. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-686-3185 |
| Primary Part Number | SSQR2.5-X14W |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carapace Armor Technology, Llc Dba Carapace Armor Technology |
| Status | ACTIVE |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Peripheral Shape Style | ROUND |
| Width | 1.051 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.281 INCHES NOMINAL 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 |
|---|---|
| SSQR2.5-X14W PRIMARY | Carapace Armor Technology, Llc Dba Carapace Armor Technology (USA) |
| Reference | Meaning |
|---|---|
| SSQR2.5-X14W | 5/9 Secondary reference Carapace Armor Technology Llc |
NSN 5310-01-686-3185 is a Washer,flat, manufactured by Carapace Armor Technology, Llc Dba Carapace Armor Technology, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-686-3185 has 1 manufacturer part number on file: SSQR2.5-X14W (Carapace Armor Technology, Llc Dba Carapace Armor Technology).
Key specifications for SSQR2.5-X14W: Overall Diameter: 0.625 INCHES NOMINAL IN; Peripheral Shape Style: ROUND; Width: 1.051 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: 1/4 - FLAT WASHER. 6 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.