The Screw,tapping, cataloged under National Stock Number 5305-00-938-2183, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-938-2183 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.164 INCHES IN |
| Head Height | 0.107 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Fastener Length | 0.218 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Nonmachine Thread Style | DOUBLE FLUTE (TYPE F) |
| Features Provided | CASEHARDENED |
| Head Style | ROUND |
| Surface Treatment | CADMIUM OVERALL |
| Internal Drive Style | SLOT |
| Material | STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL |
| Head Diameter | 0.287 INCHES MINIMUM AND 0.309 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 |
| Reference | Meaning |
|---|---|
| 10-320411 | 3/9 Design control — primary reference Teledyne Industries Inc Teledyne Power Systems Div |
| 10-320411 | 5/9 Secondary reference Unison Industries Llc |
| 10-320411 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
NSN 5305-00-938-2183 is a Screw,tapping, classified under FSC 5305, Screws. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 1660-00-968-8214, 4820-01-643-2970. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-00-938-2183: Nonmachine Nominal Thread Diameter: 0.164 INCHES IN; Head Height: 0.107 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Fastener Length: 0.218 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Nonmachine Thread Style: DOUBLE FLUTE (TYPE F). 10 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.