The Screw,shoulder, cataloged under National Stock Number 5305-01-008-5403, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-008-5403 |
| Primary Part Number | CA27032-3090 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Head Height | 0.490 INCHES NOMINAL IN |
| Fastener Length | 4.660 INCHES MINIMUM AND 4.676 INCHES MAXIMUM IN |
| Shoulder Length | 3.710 INCHES MINIMUM AND 3.736 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | MIL-C-8837 TY2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE THREADS |
| Surface Treatment Document and Classification | QQ-C-320 CL 2E FED SPEC SINGLE TREATMENT RESPONSE GRIP |
| Surface Treatment Document and Classification | QQ-C-320 CLASS 2E FED SPEC SINGLE TREATMENT RESPONSE HEAD |
| Shoulder Diameter | 1.499 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.779 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | G-1010 COMP 4330FSCM 26512 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.250 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.610 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM THREADS |
| Surface Treatment | CHROMIUM OVERALL |
| Surface Treatment | CHROMIUM GRIP |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.440 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 1.855 INCHES MINIMUM AND 1.875 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 |
|---|---|
| CA27032-3090 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| AS185-1 | 5/2 Secondary reference U.S. Government activity |
| GB511DB3090 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5305-01-008-5403 is a Screw,shoulder, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-008-5403 has 1 manufacturer part number on file: CA27032-3090 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for CA27032-3090: Head Height: 0.490 INCHES NOMINAL IN; Fastener Length: 4.660 INCHES MINIMUM AND 4.676 INCHES MAXIMUM IN; Shoulder Length: 3.710 INCHES MINIMUM AND 3.736 INCHES MAXIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: MIL-C-8837 TY2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE THREADS. 27 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.