The Washer,spring Tension, cataloged under National Stock Number 5310-01-031-0786, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Commercial. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-031-0786 |
| Primary Part Number | BACW10Q5 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Commercial |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SPRING TENSION |
| Material Document and Classification | MIL-S-7952 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.790 INCHES MINIMUM AND 0.790 INCHES MINIMUM AND 0.810 INCHES MAXIMUM0.810 INCHES MAXIMUM IN |
| Material Thickness | 0.020 INCHES NOMINAL0.020 INCHES NOMINAL IN |
| Specification/standard Data | 81205-BACW10Q MANUFACTURERS STANDARD |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1020 OR STEEL COMP 1025 OVERALL |
| Hole Diameter | 0.320 INCHES MINIMUM AND 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM0.340 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 |
|---|---|
| BACW10Q5 PRIMARY | The Boeing Company Div Commercial (USA) |
| Reference | Meaning |
|---|---|
| BACW10Q5 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-031-0786 is a Washer,spring Tension, manufactured by The Boeing Company Div Commercial, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-031-0786 has 1 manufacturer part number on file: BACW10Q5 (The Boeing Company Div Commercial).
Key specifications for BACW10Q5: Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SPRING TENSION; Material Document and Classification: MIL-S-7952 MIL SPEC ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.790 INCHES MINIMUM AND 0.790 INCHES MINIMUM AND 0.810 INCHES MAXIMUM0.810 INCHES MAXIMUM IN. 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.