The Stud,shouldered, cataloged under National Stock Number 5307-01-434-3706, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5307-01-434-3706 |
| Primary Part Number | 166M1972A1 PC 18L1 |
| Item Name | Stud,shouldered |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Thread Length | 2.250 INCHES NOMINAL NUT THREAD IN |
| Thread Length | 2.250 INCHES NOMINAL STUD THREAD IN |
| Criticality Code Justification | ZZZY |
| Style Designator | SHOULDERED |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 1.000 INCHES STUD THREAD IN |
| Nominal Thread Size | 1.000 INCHES NUT THREAD IN |
| Shoulder Diameter | 1.406 INCHES NOMINAL IN |
| Thread Class | 2A STUD THREAD A |
| Thread Class | 2A NUT THREAD A |
| Thread Quantity Per Inch | 8 NUT THREAD |
| Thread Quantity Per Inch | 8 STUD THREAD |
| Material | NICKEL ALLOY |
| Shoulder Length | 0.016 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| 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 |
|---|---|
| 166M1972A1 PC 18L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 166M1972A1 PC 18 | 5/9 Secondary reference Itt Corporation Dba Itt Standard |
| 166M1972A1 PC 18 | 3/1 Design control — primary reference Fluid Handling Llc |
NSN 5307-01-434-3706 is a Stud,shouldered, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-434-3706 has 1 manufacturer part number on file: 166M1972A1 PC 18L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 166M1972A1 PC 18L1: Thread Length: 2.250 INCHES NOMINAL NUT THREAD IN; Thread Length: 2.250 INCHES NOMINAL STUD THREAD IN; Criticality Code Justification: ZZZY; Style Designator: SHOULDERED. 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.