The Pin,tapered,threaded, cataloged under National Stock Number 5315-01-181-7783, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-181-7783 |
| Primary Part Number | H-3373 PIECE 038 |
| Item Name | Pin,tapered,threaded |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| First End Location | SQUARE END |
| Thread Length | 0.620 INCHES NOMINAL IN |
| First End Style | SQUARE |
| Style Designator | THREADED AT LARGE END |
| Taper Major Diameter | 0.250 INCHES NOMINAL IN |
| Second End Relationship with First End | IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Taper Length | 1.380 INCHES NOMINAL IN |
| Taper | 0.250 PER FOOT IN INCHES |
| Thread Class | 2A A |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| H-3373 PIECE 038 PRIMARY | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| H-3373 GR0UP 4 PIECE 038 | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy, Inc. |
NSN 5315-01-181-7783 is a Pin,tapered,threaded, manufactured by Siemens Energy, Inc., classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-181-7783 has 1 manufacturer part number on file: H-3373 PIECE 038 (Siemens Energy, Inc.).
Key specifications for H-3373 PIECE 038: First End Location: SQUARE END; Thread Length: 0.620 INCHES NOMINAL IN; First End Style: SQUARE; Style Designator: THREADED AT LARGE END. 13 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.