PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HTS-1Screwdriver Attachment,socket Wr

Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing · NSN 5120-00-903-8938 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-903-8938 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-903-8938. Primary manufacturer part number: HTS-1.
Features
  • Screwdriver Attachment,socket Wr — FSC 5120
  • Wrenching Surface Shape: HIGH TORQUE SINGLE END EXTERNAL
  • Tip Size Designation: 1
  • Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN
  • Style Designator: HI-TORQUE
  • Material: STEEL OVERALL
  • 9 verified cross-references
  • Primary manufacturer: Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing
Applications
  • Applications requiring Steel Overall construction
General Description

The Screwdriver Attachment,socket Wr, cataloged under National Stock Number 5120-00-903-8938, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-903-8938
Primary Part NumberHTS-1
Item NameScrewdriver Attachment,socket Wr
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerKeltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing
StatusCANCELLED
Wrenching Surface ShapeHIGH TORQUE SINGLE END EXTERNAL
Tip Size Designation1
Drive Surface Size0.250 INCHES NOMINAL SINGLE END IN
Style DesignatorHI-TORQUE
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5120-00-315-4005HT3305M INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing
5960-00-681-9768 INTERCHANGEABLE
Shield,electron Tube
5120-00-797-2992HTS-2 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Omega Technologies, Inc Dba Omega Technologies Inc
5120-00-797-2994HTS-4 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing
5120-00-863-4940HTS-7 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing
5120-00-863-49415120-00-863-4941 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
General Services Administration Federal Supply Service
5120-00-863-4942HTS-5 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing
5120-00-863-4943HTS-4A INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing
5120-00-863-4944HTS-3 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Omega Technologies, Inc Dba Omega Technologies Inc
5120-00-863-4945 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Cross-Reference Index
Part NumberManufacturer
HTS1 Hi-Shear Corporation (USA)
HTS1 Fairchild Fasteners Europe - Vsd Gmbh (DEU)
ZHTS-1 Zephyr Manufacturing Co., Inc. Dba Zephyr Manufacturing Co Inc (USA)
HTS-1 PRIMARY Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing (USA)
MIL-B-9946/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1-00HTS01 Stenzel Gmbh (DEU)
HTS1 Tecnotec Sarl (FRA)
HTS-1 Apex Tool Group, Llc (USA)
MIL-B-9946 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5120-00-315-4005INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HT3305M
5960-00-681-9768INTERCHANGEABLE
SHIELD,ELECTRON TUBE
5120-00-797-2992INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HTS-2
5120-00-797-2994INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HTS-4
5120-00-863-4940INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HTS-7
5120-00-863-4941INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
5120-00-863-4941
5120-00-863-4942INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HTS-5
5120-00-863-4943INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HTS-4A
5120-00-863-4944INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HTS-3
5120-00-863-4945INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
5120-00-937-8481INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
HTS10
5130-00-996-0901INTERCHANGEABLE
BIT,SCREWDRIVER
I-440-3

Frequently Asked Questions

What is NSN 5120-00-903-8938?

NSN 5120-00-903-8938 is a Screwdriver Attachment,socket Wr, manufactured by Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-903-8938?

NSN 5120-00-903-8938 has 9 cross-referenced part numbers: HTS1 (Hi-Shear Corporation), HTS1 (Fairchild Fasteners Europe - Vsd Gmbh), ZHTS-1 (Zephyr Manufacturing Co., Inc. Dba Zephyr Manufacturing Co Inc), HTS-1 (Keltek Specialty Tool Design & Manufacture, Inc. Dba Keltek Specialty Tool Design & Manufacturing), MIL-B-9946/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 4 more.

What NSN replaces 5120-00-903-8938?

There are 12 known substitutes for 5120-00-903-8938: 5120-00-315-4005, 5960-00-681-9768, 5120-00-797-2992 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HTS-1?

Key specifications for HTS-1: Wrenching Surface Shape: HIGH TORQUE SINGLE END EXTERNAL; Tip Size Designation: 1; Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN; Overall Length: 1.000 INCHES NOMINAL IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-903-8938 still in active supply?

NSN 5120-00-903-8938 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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