The Insert,screw Thread, cataloged under National Stock Number 5325-00-971-7617, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-971-7617 |
| Primary Part Number | K8902-6 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Length | 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Insert Size | 0.438-20 UNF 3A A |
| Style Designator | PLAIN |
| Material Document and Classification | 17-4PH,ARMCO STEEL CO MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.375 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 33 |
| Material | STEEL COMP 630 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 |
|---|---|
| K8902-6 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| SR374 | 3/2 Design control — primary reference U.S. Government activity |
| K8902-6 | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Microdot Products |
| 2994738-21 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5325-00-971-7617 is a Insert,screw Thread, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-971-7617 has 1 manufacturer part number on file: K8902-6 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for K8902-6: Length: 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN; Insert Size: 0.438-20 UNF 3A A; Style Designator: PLAIN; Material Document and Classification: 17-4PH,ARMCO STEEL CO MFR REF SINGLE MATERIAL RESPONSE OVERALL. 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.