The Insert,screw Thread, cataloged under National Stock Number 5325-01-030-8690, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-030-8690 |
| Primary Part Number | RKK5/16-18 |
| Item Name | Insert,screw Thread |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Length | 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN |
| Insert Size | 0.500-13 UNC 2A A |
| Style Designator | KEYLOCK |
| Material Document and Classification | QQ-S-637,COMP 1215 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Internal Thread Relief Depth | 0.100 INCHES NOMINAL IN |
| Nominal Thread Size | 0.312 INCHES IN |
| Full Internal Thread Length | 0.697 INCHES MINIMUM AND 0.727 INCHES MAXIMUM IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNJC |
| 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 |
|---|---|
| TR21006 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| RKK5/16-18 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
NSN 5325-01-030-8690 is a Insert,screw Thread, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-030-8690 has 2 manufacturer part numbers on file: TR21006 (Howmet Global Fastening Systems Inc. Div Tridair Products), RKK5/16-18 (Howmet Global Fastening Systems Inc. Div Tridair Products).
Key specifications for RKK5/16-18: Length: 0.422 INCHES MINIMUM AND 0.452 INCHES MAXIMUM IN; Insert Size: 0.500-13 UNC 2A A; Style Designator: KEYLOCK; Material Document and Classification: QQ-S-637,COMP 1215 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.