The Stud,plain, cataloged under National Stock Number 5307-01-318-2401, is classified within Federal Supply Class 5307 (Studs) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-318-2401 |
| Primary Part Number | NUT END 1 1/4-8UN-3A X 5 1/2L1 |
| Item Name | Stud,plain |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Thread Length | 1.875 INCHES NOMINAL STUD THREAD IN |
| Thread Length | 2.750 INCHES NOMINAL NUT THREAD IN |
| Criticality Code Justification | ZZZX |
| Material Document and Classification | ASTM A193 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND STUD THREAD |
| Thread Direction | RIGHT-HAND NUT THREAD |
| Nominal Thread Size | 1.250 INCHES NUT THREAD IN |
| Nominal Thread Size | 1.250 INCHES STUD THREAD IN |
| Departure From Cited Designator | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Nondefinitive Spec/std Data | I TYPE AND A STYLE |
| Thread Class | 3A NUT THREAD A |
| Thread Class | 5 STUD THREAD |
| Thread Quantity Per Inch | 8 NUT THREAD |
| Thread Quantity Per Inch | 7 STUD THREAD |
| Material | STEEL |
| Thread Series Designator | UN NUT THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| NUT END 1 1/4-8UN-3A X 5 1/2L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| MIL-DTL-1222 TYPE I STYA GRB7L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| STUD END 1 1/4-7NC5HF-3AX5 1/2L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| MIL-DTL-1222L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| STUD END 1 1/4-7NC5HF-3AX5 1/2 | 4/1 Identification reference U.S. Government activity |
| MIL-DTL-1222 | 4/1 Identification reference U.S. Government activity |
| NUT END 1 1/4-8UN-3A X 5 1/2 | 4/1 Identification reference U.S. Government activity |
| MIL-DTL-1222 TYPE I STYA GRB7 | 4/1 Identification reference U.S. Government activity |
NSN 5307-01-318-2401 is a Stud,plain, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-318-2401 has 3 manufacturer part numbers on file: NUT END 1 1/4-8UN-3A X 5 1/2L1 (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222 TYPE I STYA GRB7L1 (Naval Inventory Control Point Mechanicsburg), STUD END 1 1/4-7NC5HF-3AX5 1/2L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for NUT END 1 1/4-8UN-3A X 5 1/2L1: Thread Length: 1.875 INCHES NOMINAL STUD THREAD IN; Thread Length: 2.750 INCHES NOMINAL NUT THREAD IN; Criticality Code Justification: ZZZX; Material Document and Classification: ASTM A193 ASSN STD SINGLE MATERIAL RESPONSE. 17 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.