The Stud,continuous Thread, cataloged under National Stock Number 5307-01-352-1778, 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 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5307-01-352-1778 |
| Primary Part Number | SIZE 7/8-9UNC-3A X 4L1 |
| Item Name | Stud,continuous Thread |
| FSC / FSG | 5307 / 53 — Studs |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Thread Direction | RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED |
| Nominal Thread Size | 0.875 INCHES LOCATION NOT OTHERWISE SPECIFIED IN |
| Nondefinitive Spec/std Data | 4 TYPE AND 500 GRADE |
| Thread Class | 3A LOCATION NOT OTHERWISE SPECIFIED A |
| Thread Quantity Per Inch | 9 LOCATION NOT OTHERWISE SPECIFIED |
| Material | NICKEL ALLOY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW 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 |
|---|---|
| SIZE 7/8-9UNC-3A X 4L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| DF330705 FIND 21L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 801-6405340 FIND 21L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| MILDTL1222 TYIV 7/8-9UNC-3AX4 | 5/1 Secondary reference U.S. Government activity |
| MILDTL1222 TYIV 7/8-9UNC-3AX4L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-DTL-1222L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-DTL-1222 | 4/1 Identification reference U.S. Government activity |
| DF330705 FIND 21 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 801-6405340 FIND 21 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 5307-01-352-1778 is a Stud,continuous Thread, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5307, Studs. Status: active.
NSN 5307-01-352-1778 has 3 manufacturer part numbers on file: SIZE 7/8-9UNC-3A X 4L1 (Naval Inventory Control Point Mechanicsburg), DF330705 FIND 21L1 (Naval Inventory Control Point Mechanicsburg), 801-6405340 FIND 21L1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 5307-01-380-0654. Verify interchangeability with system specifications before substitution.
Key specifications for SIZE 7/8-9UNC-3A X 4L1: Criticality Code Justification: ZZZY; Overall Length: 4.000 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED; Nominal Thread Size: 0.875 INCHES LOCATION NOT OTHERWISE SPECIFIED IN. 9 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.