The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-155-2568, 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 20 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-155-2568 |
| Primary Part Number | NAS1191-04P5LH |
| 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 GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Fastener Length | 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.231 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1191 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | STRIP THREADS |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8735 OR STEEL COMP 6150 OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.178 INCHES MINIMUM AND 0.183 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 |
|---|---|
| NAS1191-04P5LH PRIMARY | Apcom Inc (USA) |
| NAS1191-04P5LH PRIMARY | Nd Industries Inc Div Eastern Division (USA) |
| NAS1191-04P5LH PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1191-04P5LH PRIMARY | Nor-Cal Supply Co (USA) |
| NAS1191-04P5LH PRIMARY | Huck International, Inc (USA) |
| NAS1191-04P5LH PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1191-04P5LH PRIMARY | Long-Lok Llc (USA) |
| NAS1191-04P5LH PRIMARY | Hi-Shear Corporation (USA) |
| NAS1191-04P5LH PRIMARY | Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc (USA) |
| NAS1191-04P5LH PRIMARY | Plastic and Metal Products Corporation (USA) |
| Reference | Meaning |
|---|---|
| NAS1191-04P5LH | 5/9 Secondary reference Air Industries Co Inc |
| NAS1191-04P5LH | 5/9 Secondary reference U.S. Government activity |
| NAS1191-04P5LH | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1191-04P5LH | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1191-04P5LH | 3/2 Design control — primary reference U.S. Government activity |
| NAS1191-04P5LH | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-155-2568 is a Screw,cap,socket Head, manufactured by Apcom Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-155-2568 has 10 manufacturer part numbers on file: NAS1191-04P5LH (Apcom Inc), NAS1191-04P5LH (Nd Industries Inc Div Eastern Division), NAS1191-04P5LH (Fastener Innovation Technology, Inc. Dba F I T), NAS1191-04P5LH (Nor-Cal Supply Co), NAS1191-04P5LH (Huck International, Inc) and 5 more.
Key specifications for NAS1191-04P5LH: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.059 INCHES MINIMUM AND 0.069 INCHES MAXIMUM 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.