The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-668-4698, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sems and Specials, Inc. Dba Sems & Specials Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-668-4698 |
| Primary Part Number | 37100HCF18-8 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sems and Specials, Inc. Dba Sems & Specials Inc |
| Status | ACTIVE |
| Extended Washer Thickness | 0.064 INCHES NOMINAL IN |
| Head Height | 0.234375 INCHES NOMINAL IN |
| Fastener Length | 1.234375 INCHES NOMINAL IN |
| Extended Washer Diameter | 1.015 INCHES NOMINAL IN |
| Thread Length | 1.00 INCHES NOMINAL IN |
| Hardness Rating | 95.0 ROCKWELL B NOMINAL OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.5625 INCHES NOMINAL IN |
| Minimum Tensile Strength | 100000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 37100HCF18-8 PRIMARY | Sems and Specials, Inc. Dba Sems & Specials Inc (USA) |
| 90300A180 | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-668-4698 is a Screw,cap,hexagon Head, manufactured by Sems and Specials, Inc. Dba Sems & Specials Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-668-4698 has 2 manufacturer part numbers on file: 37100HCF18-8 (Sems and Specials, Inc. Dba Sems & Specials Inc), 90300A180 (Mcmaster-Carr Supply Co).
Key specifications for 37100HCF18-8: Extended Washer Thickness: 0.064 INCHES NOMINAL IN; Head Height: 0.234375 INCHES NOMINAL IN; Fastener Length: 1.234375 INCHES NOMINAL IN; Extended Washer Diameter: 1.015 INCHES NOMINAL IN. 15 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.