The Screw Adjusting, cataloged under National Stock Number 5305-01-203-4963, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Screw Adjusting |
| FSC / FSG | 5305 — Screws (FSG 53) |
| Manufacturers | Circor Pumps North America Llc (CAGE 59180) |
| Parameter | Value |
|---|---|
| NSN | 5305-01-203-4963 |
| Primary Part Number | SG-3106 PIECE 22 |
| Item Name | Screw Adjusting |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| SG-3106 PIECE 22 | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG-3106 PIECE 22 | 5/9 Secondary reference Siemens Energy, Inc. |
| B10242 | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy, Inc. |
| B-10242 | 3/9 Design control — primary reference Kunkle Industries Inc Lonergan Valve Div |
| 020-100-0153 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
NSN 5305-01-203-4963 is a Screw Adjusting, manufactured by Circor Pumps North America Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-203-4963 has 1 manufacturer part number on file: SG-3106 PIECE 22 (Circor Pumps North America Llc).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-630-7210. Verify interchangeability with system specifications before substitution.
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.