The Screw,tapping, cataloged under National Stock Number 5305-01-164-9723, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-164-9723 |
| Primary Part Number | 90086A550 |
| Item Name | Screw,tapping |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Nonmachine Nominal Thread Diameter | 0.312 INCHES IN |
| Fastener Length | 2.000 INCHES NOMINAL IN |
| Nonmachine Thread Style | DOUBLE FLUTE (TYPE F) |
| Material Document and Classification | SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.221 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Head Style | FLAT COUNTERSUNK |
| Surface Treatment | CADMIUM AND ZINC OVERALL |
| Internal Drive Style | TORX |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Material | STEEL OVERALL |
| Head Diameter | 0.568 INCHES MINIMUM AND 0.635 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 |
|---|---|
| 90086A550 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 3600-901 | 5/9 Secondary reference Beta Mfg Co Inc Sub of Hayes Corp |
NSN 5305-01-164-9723 is a Screw,tapping, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-164-9723 has 1 manufacturer part number on file: 90086A550 (Mcmaster-Carr Supply Co).
1 possible match (shared part number, not a government interchangeability claim): 5307-01-293-7978. Verify interchangeability with system specifications before substitution.
Key specifications for 90086A550: Nonmachine Nominal Thread Diameter: 0.312 INCHES IN; Fastener Length: 2.000 INCHES NOMINAL IN; Nonmachine Thread Style: DOUBLE FLUTE (TYPE F); Material Document and Classification: SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 12 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.