The Screw,shoulder, cataloged under National Stock Number 5305-01-414-5135, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Valley-Todeco, Inc. Dba Arconic Fastening Systems. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-414-5135 |
| Primary Part Number | BACB30JQ10-21 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Valley-Todeco, Inc. Dba Arconic Fastening Systems |
| Status | ACTIVE |
| Width Across Flats | 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN |
| Head Height | 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN |
| Fastener Length | 2.250 INCHES NOMINAL IN |
| Shoulder Length | 1.312 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416, TY 2, CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| Shoulder Diameter | 0.6542 INCHES MINIMUM AND 0.6552 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.938 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | BEVEL-CONICAL |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.040 INCHES MINIMUM AND 1.050 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 |
|---|---|
| BACB30JQ10-21 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30JQ10-21 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| BACB30JQ10-21 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| BACB30JQ10-21 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| BACB30JQ10-21 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30JQ10-21 | 5/9 Secondary reference Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
NSN 5305-01-414-5135 is a Screw,shoulder, manufactured by Valley-Todeco, Inc. Dba Arconic Fastening Systems, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-414-5135 has 3 manufacturer part numbers on file: BACB30JQ10-21 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30JQ10-21 (Fastener Innovation Technology, Inc. Dba F I T), BACB30JQ10-21 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for BACB30JQ10-21: Width Across Flats: 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN; Head Height: 0.5005 INCHES MINIMUM AND 0.5035 INCHES MAXIMUM IN; Fastener Length: 2.250 INCHES NOMINAL IN; Shoulder Length: 1.312 INCHES NOMINAL FIRST SHOULDER IN. 19 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.