The Washer,recessed, cataloged under National Stock Number 5310-01-434-3797, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-434-3797 |
| Primary Part Number | BACW10BP71C |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6357 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6352 ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.750 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN |
| Material Thickness | 0.064 INCHES MINIMUM AND 0.078 INCHES MAXIMUM IN |
| Specification/standard Data | 81205-BACW10P PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Recess Diameter | 0.567 INCHES MINIMUM AND 0.587 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND CHROMATE OVERALL |
| Material | STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4135 OVERALL |
| Hole Diameter | 0.454 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN |
| Recess Angle | 45.0 DEGREES MINIMUM AND 50.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| BACW10BP71C | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACW10BP71C | Component Products Corporation Dba Component Products Corp (USA) |
| BACW10BP71C | Anillo Industries Llc (USA) |
| BACW10BP71C | Moeller Manufacturing & Supply, Llc (USA) |
| Reference | Meaning |
|---|---|
| BACW10BP71C | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-434-3797 is a Washer,recessed, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-434-3797 has 4 manufacturer part numbers on file: BACW10BP71C (Sps Technologies, Llc Dba PB Fasteners), BACW10BP71C (Component Products Corporation Dba Component Products Corp), BACW10BP71C (Anillo Industries Llc), BACW10BP71C (Moeller Manufacturing & Supply, Llc).
Key specifications for BACW10BP71C: Surface Treatment Document and Classification: AMS 2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM; Style Designator: RECESSED; Material Document and Classification: MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18728 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6357 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6352 ASSN STD 4TH MATERIAL RESPONSE OVERALL. 12 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.