The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-276-9772, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Chicago Steel Tape Co Inc Berger Instruments Co Inc. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-276-9772 |
| Primary Part Number | FX28N |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Chicago Steel Tape Co Inc Berger Instruments Co Inc |
| Status | ACTIVE |
| Head Height | 0.156 INCHES NOMINAL IN |
| Fastener Length | 0.438 INCHES NOMINAL IN |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.125 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | LACQUER OVERALL |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 44 |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.240 INCHES MINIMUM AND 0.245 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 |
|---|---|
| FX28N PRIMARY | Chicago Steel Tape Co Inc Berger Instruments Co Inc (USA) |
NSN 5305-01-276-9772 is a Screw,cap,socket Head, manufactured by Chicago Steel Tape Co Inc Berger Instruments Co Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-276-9772 has 1 manufacturer part number on file: FX28N (Chicago Steel Tape Co Inc Berger Instruments Co Inc).
Key specifications for FX28N: Head Height: 0.156 INCHES NOMINAL IN; Fastener Length: 0.438 INCHES NOMINAL IN; Thread Length: 0.250 INCHES NOMINAL IN; Nominal Thread Diameter: 0.125 INCHES IN. 13 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.