The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-657-9170, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Heartland Precision Fasteners Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Heartland Precision Fasteners Inc (CAGE 0ZC92); 3-V Fastener Co., Inc. (CAGE 1ER65); Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (CAGE 06725); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-657-9170 |
| Primary Part Number | BACS12HM4B16 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Heartland Precision Fasteners Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| BACS12HM4B16 | Heartland Precision Fasteners Inc (USA) |
| BACS12HM4B16 | 3-V Fastener Co., Inc. (USA) |
| BACS12HM4B16 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACS12HM4B16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACS12HM4B16 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-657-9170 is a Screw,cap,socket Head, manufactured by Heartland Precision Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-657-9170 has 4 manufacturer part numbers on file: BACS12HM4B16 (Heartland Precision Fasteners Inc), BACS12HM4B16 (3-V Fastener Co., Inc.), BACS12HM4B16 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACS12HM4B16 (Sps Technologies, Llc Dba PB Fasteners).
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.