The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-151-8676, 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 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-151-8676 |
| Primary Part Number | CA4710-0409 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES GRIP |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Fastener Length | 0.990 INCHES NOMINAL IN |
| Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM LOCKING FEATURE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Locking Feature | DETENT BALL THREADS |
| Surface Treatment | PASSIVATE SPRING |
| Surface Treatment | PASSIVATE LOCKING FEATURE |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 440C LOCKING FEATURE |
| Material | STEEL COMP 8740 FASTENER |
| Material | STEEL COMP 631 SPRING |
| 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 |
|---|---|
| CA4710-0409 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| VP1120-4-9 | 5/9 Secondary reference U.S. Government activity |
| GB510K4-9 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| CA4740-04-9 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Tridair Products |
| AS109-04-9 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-151-8676 is a Screw,cap,socket Head, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-151-8676 has 1 manufacturer part number on file: CA4710-0409 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for CA4710-0409: Surface Finish: 63.0 MICROINCHES GRIP; Surface Finish: 63.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 0.990 INCHES NOMINAL IN; Hardness Rating: 50.0 ROCKWELL C MINIMUM AND 58.0 ROCKWELL C MAXIMUM LOCKING FEATURE. 17 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.