The Screw,self-Drilling, cataloged under National Stock Number 5305-01-654-2373, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-654-2373 |
| Primary Part Number | 91324A551 |
| Item Name | Screw,self-Drilling |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Head Height | 0.172 INCHES NOMINAL0.172 INCHES NOMINAL IN |
| Point Length | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Fastener Length | 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | WEATHER RESISTANT COATING MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.399 INCHES NOMINAL0.399 INCHES NOMINAL IN |
| Nonmachine Thread Style | SELF DRILLINGSELF DRILLING |
| Nominal Thread Diameter | 0.1900 INCHES0.1900 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHERHEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Point Style | SELF-DRILLINGSELF-DRILLING |
| Width Between Flats | 0.3125 INCHES NOMINAL0.3125 INCHES NOMINAL IN |
| Pilot Length | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Internal Drive Style | W/O INTERNAL DRIVEW/O INTERNAL DRIVE |
| Thread Class | 2A2A |
| Thread Quantity Per Inch | 2424 |
| Material | STEEL 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 |
|---|---|
| 91324A551 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 19E2401087-1 | 7/2 Vendor item drawing reference Devcom Chemical Biological Center Dba Chemical Biological Center Div U.s. Dept of Army |
NSN 5305-01-654-2373 is a Screw,self-Drilling, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-654-2373 has 1 manufacturer part number on file: 91324A551 (Mcmaster-Carr Supply Co).
Key specifications for 91324A551: Head Height: 0.172 INCHES NOMINAL0.172 INCHES NOMINAL IN; Point Length: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN; Fastener Length: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: WEATHER RESISTANT COATING MFR REF SINGLE TREATMENT RESPONSE OVERALL. 17 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.