The Screw,shoulder, cataloged under National Stock Number 5305-01-070-1708, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-070-1708 |
| Primary Part Number | BACB30PW3-7 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Head Height | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Fastener Length | 0.741 INCHES MINIMUM AND 0.771 INCHES MAXIMUM IN |
| Shoulder Length | 0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.283 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNJC |
| 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 |
|---|---|
| BACB30PW3-7 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30PW3-7 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30PW3-7 | Federal Manufacturing Corp (USA) |
| BACB30PW3-7 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACB30PW3-7 PRIMARY | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30PW3-7 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30PW3-7 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30PW3-7 | 5/9 Secondary reference U.S. Government activity |
| BACB30PW3-7 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| BACB30PW3-7 | 7/2 Vendor item drawing reference U.S. Government activity |
| BACB30PW3-7 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-070-1708 is a Screw,shoulder, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-070-1708 has 7 manufacturer part numbers on file: BACB30PW3-7 (Sps Technologies, Llc Dba PB Fasteners), BACB30PW3-7 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30PW3-7 (Federal Manufacturing Corp), BACB30PW3-7 (Howmet Global Fastening Systems Inc), BACB30PW3-7 (Howmet Global Fastening Systems Inc Div City of Industry Operations) and 2 more.
Key specifications for BACB30PW3-7: Head Height: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN; Fastener Length: 0.741 INCHES MINIMUM AND 0.771 INCHES MAXIMUM IN; Shoulder Length: 0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.