The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-107-1990, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Apcom Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-107-1990 |
| Primary Part Number | NAS1189-04P4 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Apcom Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Fastener Length | 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.124 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 6300 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.177 INCHES MINIMUM AND 0.225 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 |
|---|---|
| NAS1189-04P4 | Apcom Inc (USA) |
| NAS1189-04P4 | Long-Lok Llc (USA) |
| NAS1189-04P4 | Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc (USA) |
| NAS1189-04P4 | Hi-Shear Corporation (USA) |
| NAS1189-04P4 | Nd Industries Inc Div Eastern Division (USA) |
| NAS1189-04P4 | Plastic and Metal Products Corporation (USA) |
| NAS1189-04P4 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1189-04P4 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| NAS1189-04P4 | 5/9 Secondary reference Nor-Cal Supply Co |
| NAS1189-04P4 | 5/9 Secondary reference F and C Sales Inc |
| NAS1189-04P4 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1189-04P4 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| LK1189-04P4 | 5/9 Secondary reference Torkon Fastener Corp |
| NAS1189-04P4 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| NAS1189-04P4 | 5/9 Secondary reference Air Industries Co Inc |
| NAS1189-04P4 | 5/2 Secondary reference U.S. Government activity |
| NAS1189-04P4 | 5/2 Secondary reference U.S. Government activity |
| NAS1189-04P4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-107-1990 is a Screw,cap,socket Head, manufactured by Apcom Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-107-1990 has 8 manufacturer part numbers on file: NAS1189-04P4 (Apcom Inc), NAS1189-04P4 (Long-Lok Llc), NAS1189-04P4 (Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc), NAS1189-04P4 (Hi-Shear Corporation), NAS1189-04P4 (Nd Industries Inc Div Eastern Division) and 3 more.
Key specifications for NAS1189-04P4: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.