The Screw,shoulder, cataloged under National Stock Number 5305-01-628-1658, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-628-1658 |
| Primary Part Number | BM19060-06-559 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 0.695 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN |
| Shoulder Length | 0.480 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416, TY 2, CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.141 INCHES MINIMUM AND 0.142 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.255 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL B MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Color | RED TOP OF HEAD |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | SLOT |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4037 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.223 INCHES NOMINAL 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 |
|---|---|
| BM19060-06-559 PRIMARY | Huck International, Inc (USA) |
| GS551C06-559 | Northrop Grumman Systems Corporation (USA) |
| PBF1285-06-559 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| AIC551C-06-559 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| PIL551C06-559 | Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona (USA) |
| HP6551C06-559 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| BM19069-06-559 | Huck International, Inc (USA) |
| PIL551C-06-559 | Pilgrim Screw Corporation Dba Pilgrim Aerospace Fasteners (USA) |
NSN 5305-01-628-1658 is a Screw,shoulder, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-628-1658 has 8 manufacturer part numbers on file: BM19060-06-559 (Huck International, Inc), GS551C06-559 (Northrop Grumman Systems Corporation), PBF1285-06-559 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), AIC551C-06-559 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), PIL551C06-559 (Pilgrim Screw Corp Dba Pilgrim Aerospace Fasteners Div Arizona) and 3 more.
Key specifications for BM19060-06-559: Fastener Length: 0.695 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN; Shoulder Length: 0.480 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416, TY 2, CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Diameter: 0.141 INCHES MINIMUM AND 0.142 INCHES MAXIMUM FIRST SHOULDER IN. 20 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.