The Screw,shoulder, cataloged under National Stock Number 5305-01-534-1233, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is American Aerospace Precsn Mfg Dba Aapm. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-534-1233 |
| Primary Part Number | SHB-2 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | American Aerospace Precsn Mfg Dba Aapm |
| Status | ACTIVE |
| Head Height | 0.156 INCHES NOMINAL IN |
| Fastener Length | 2.156 INCHES NOMINAL IN |
| Shoulder Length | 1.750 INCHES NOMINAL OVERALL IN |
| Shoulder Diameter | 0.311 INCHES NOMINAL ALL SHOULDERS IN |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Shoulder Shape | ROUND OVERALL |
| Nominal Thread Diameter | 0.225 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.437 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| SHB-2 PRIMARY | American Aerospace Precsn Mfg Dba Aapm (USA) |
| Reference | Meaning |
|---|---|
| SHB | D/9 Drawing number reference only D & D Machinery & Sales Inc |
NSN 5305-01-534-1233 is a Screw,shoulder, manufactured by American Aerospace Precsn Mfg Dba Aapm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-534-1233 has 1 manufacturer part number on file: SHB-2 (American Aerospace Precsn Mfg Dba Aapm).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-534-1239. Verify interchangeability with system specifications before substitution.
Key specifications for SHB-2: Head Height: 0.156 INCHES NOMINAL IN; Fastener Length: 2.156 INCHES NOMINAL IN; Shoulder Length: 1.750 INCHES NOMINAL OVERALL IN; Shoulder Diameter: 0.311 INCHES NOMINAL ALL SHOULDERS IN. 14 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.