PartsTable TECHNICAL DATA SHEET
NSN 5120-01-030-1243Government record, cited

Key, Socket Head Screw5120-01-030-1243

NSN 5120-01-030-1243 · NIIN 010301243 · Part number D48955
O T S I · FSC 5120 — Hand Tools, Nonedged, Nonpowered · FSG 51 — Hand Tools · CAGE 05825
Government record, cited
NSN 5120-01-030-1243 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-030-1243. Manufacturer of record part number: D48955.
Also searched as  5120-01-030-1243 · 5120010301243 · NIIN 010301243 · 01-030-1243 · FSC 5120 Hand Tools, Nonedged, Nonpowered · CAGE 05825 · D48955
Nearby stock numbers  ·
Features
  • Key,socket Head Screw — FSC 5120
  • Wrenching Surface Size: 0.875 INCHES NOMINAL SINGLE END IN
  • Style Designator: FIXED T-HANDLE
  • Wrenching Surface Shape: SPLINE SINGLE END EXTERNAL
  • Wrenching Surface Flute Quantity: 13
  • Material: STEEL OVERALL
  • 1 manufacturer part number on file
  • Manufacturer of record: O T S I
Identification
  • NSN: 5120-01-030-1243
  • NIIN: 010301243
  • FSC: 5120 — Hand Tools, Nonedged, Nonpowered
  • FSG: 51 — Hand Tools
  • Primary part number: D48955
  • Manufacturer: O T S I
General Description

The Key,socket Head Screw, cataloged under National Stock Number 5120-01-030-1243, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is O T S I. Government technical data includes 5 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-030-1243
Primary Part NumberD48955
Item NameKey,socket Head Screw
FSC / FSG5120 / 51 — Hand Tools, Nonedged, Nonpowered
ManufacturerO T S I
StatusACTIVE
Wrenching Surface Size0.875 INCHES NOMINAL SINGLE END IN
Style DesignatorFIXED T-HANDLE
Wrenching Surface ShapeSPLINE SINGLE END EXTERNAL
Wrenching Surface Flute Quantity13
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
D48955 PRIMARY O T S I (USA)
No interchangeability data on file.
Other items in FSC 5120 — Hand Tools, Nonedged, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5120-00-001-2642
ADAPTER,TORQUE WRENCH
5120-00-001-2644
ADAPTER,TORQUE WRENCH
5120-00-001-2650
INSERTER,SEAL
5120-00-001-2651
5120-00-001-2651 · Item name not on file
5120-00-001-2652
INSTALLING TOOL,SHAFT
5120-00-001-2653
REMOVER,PREFORMED PACKING
5120-00-001-2654
REMOVER,PREFORMED PACKING
5120-00-001-2655
SOCKET,WRENCH,FACE SPANNER

Frequently Asked Questions

What is NSN 5120-01-030-1243?

NSN 5120-01-030-1243 is a Key,socket Head Screw, manufactured by O T S I, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.

What part numbers are listed for NSN 5120-01-030-1243?

NSN 5120-01-030-1243 has 1 manufacturer part number on file: D48955 (O T S I).

What are the specifications of D48955?

Key specifications for D48955: Wrenching Surface Size: 0.875 INCHES NOMINAL SINGLE END IN; Style Designator: FIXED T-HANDLE; Overall Length: 3.000 INCHES NOMINAL IN; Overall Width: 5.000 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.

Is NSN 5120-01-030-1243 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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