The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-995-3496, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Librascope Corporation. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-995-3496 |
| Primary Part Number | H669160416 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lockheed Martin Librascope Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.095 INCHES NOMINAL IN |
| Head Height | 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-STD-171, FINISH 5.4 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.668 INCHES MINIMUM IN |
| Material Document and Classification | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES FASTENER |
| Material Document and Classification | ASTM D789, COMP 1 ASSN STD SINGLE MATERIAL RESPONSE OR MIL-M-20693, COMP 1, TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH OR PELLET THREADS |
| Surface Treatment | PASSIVATE FASTENER |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 316 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.176 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 |
|---|---|
| H669160416 | Lockheed Martin Librascope Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1486137-33 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| LP57U40J16M | 3/1 Design control — primary reference Long-Lok, Llc |
| M60CR440-16E | 3/1 Design control — primary reference Nylok Llc |
NSN 5305-00-995-3496 is a Screw,cap,socket Head, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-995-3496 has 1 manufacturer part number on file: H669160416 (Lockheed Martin Librascope Corporation).
Key specifications for H669160416: Width Across Flats: 0.095 INCHES NOMINAL IN; Head Height: 0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM IN; Fastener Length: 1.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-STD-171, FINISH 5.4 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER. 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.