The Insert,screw Thread, cataloged under National Stock Number 5325-00-331-4776, 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 14 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-331-4776 |
| Primary Part Number | KNKDL428JS |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Length | 0.400 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Insert Size | 0.500-20 UNF 2A MODIFIED A |
| Style Designator | KEYLOCK |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Internal Thread Relief Depth | 0.150 INCHES NOMINAL IN |
| Features Provided | INDIVIDUALLY KEYED |
| Nominal Thread Size | 0.250 INCHES IN |
| Full Internal Thread Length | 0.290 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 302 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 |
|---|---|
| KNKDL428JS PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| Reference | Meaning |
|---|---|
| 10119095 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 5325PL0725018 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 115-0162-006 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| KNKD428S | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc. Div Tridair Products |
| KNKDL428S | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Tridair Products |
| 935275-5 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5325-00-331-4776 is a Insert,screw Thread, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-331-4776 has 1 manufacturer part number on file: KNKDL428JS (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for KNKDL428JS: Length: 0.400 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Insert Size: 0.500-20 UNF 2A MODIFIED A; Style Designator: KEYLOCK. 14 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.