The Stud,locked in, cataloged under National Stock Number 5307-00-549-3448, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Pti Technologies Inc.. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5307-00-549-3448 |
| Primary Part Number | 84000081 |
| Item Name | Stud,locked in |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Serrated Portion to Nut End | 2.500 INCHES NOMINAL IN |
| Thread Length | 0.390 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 1.120 INCHES MINIMUM AND 1.150 INCHES MAXIMUM NUT THREAD IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM |
| Style Designator | LOCKED IN |
| Thread Pitch Diameters | +0.2778 TO 0.2795 INCHES STUD THREAD IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE |
| Distance From Serrated Portion to End of Stud Thread | 0.170 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 0.250 INCHES NUT THREAD IN |
| Distance From Serrated Portion to Stud End | 0.560 INCHES NOMINAL IN |
| Locking Feature | RING, LOCK SERRATED |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A NUT THREAD A |
| Thread Quantity Per Inch | 28 NUT THREAD |
| Material | STEEL COMP 4130 |
| Thread Series Designator | UNF NUT THREAD |
| 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 |
|---|---|
| 84000081 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 84000081 | 5/9 Secondary reference U.S. Government activity |
NSN 5307-00-549-3448 is a Stud,locked in, manufactured by Pti Technologies Inc., classified under FSC 5307, Studs. Status: active.
NSN 5307-00-549-3448 has 1 manufacturer part number on file: 84000081 (Pti Technologies Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5996-00-869-9280. Verify interchangeability with system specifications before substitution.
Key specifications for 84000081: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance From Serrated Portion to Nut End: 2.500 INCHES NOMINAL IN; Thread Length: 0.390 INCHES NOMINAL STUD THREAD IN; Thread Length: 1.120 INCHES MINIMUM AND 1.150 INCHES MAXIMUM NUT THREAD IN. 19 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.