The Insert,screw Thread, cataloged under National Stock Number 5325-00-939-1004, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-00-939-1004 |
| Primary Part Number | KNYD4S |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Width Across Flats | 0.759 INCHES MINIMUM AND 0.763 INCHES MAXIMUM IN |
| Length | 0.674 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN |
| Flange Thickness | 0.200 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Insert Size | 0.625-18 UNF 3A A |
| Style Designator | FLANGE |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.437 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| KNYD4S PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| KNYD4S | 5/1 Secondary reference General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp |
NSN 5325-00-939-1004 is a Insert,screw Thread, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-939-1004 has 1 manufacturer part number on file: KNYD4S (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for KNYD4S: Width Across Flats: 0.759 INCHES MINIMUM AND 0.763 INCHES MAXIMUM IN; Length: 0.674 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN; Flange Thickness: 0.200 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN; Insert Size: 0.625-18 UNF 3A A. 11 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.