PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RXS18BWrench,open End Box

Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc · NSN 5120-01-428-8384 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-428-8384 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-428-8384. Primary manufacturer part number: RXS18B.
Features
  • Wrench,open End Box — FSC 5120
  • Wrenching Surface Size: 0.562 INCHES NOMINAL BOTH ENDS IN
  • Wrenching Surface Shape: 6 POINT SECOND END INTERNAL
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: HEXAGON FIRST END INTERNAL
  • Nondefinitive Spec/std Data: 2 TYPE
  • Specification/standard Data: 05047-ASME B107.100 CAT 40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Surface Treatment: CHROMIUM OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End Box, cataloged under National Stock Number 5120-01-428-8384, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-428-8384
Primary Part NumberRXS18B
Item NameWrench,open End Box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerIdsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
StatusCANCELLED
Wrenching Surface Size0.562 INCHES NOMINAL BOTH ENDS IN
Wrenching Surface Shape6 POINT SECOND END INTERNAL
MaterialSTEEL OVERALL
Wrenching Surface ShapeHEXAGON FIRST END INTERNAL
Nondefinitive Spec/std Data2 TYPE
Specification/standard Data05047-ASME B107.100 CAT 40 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Surface TreatmentCHROMIUM OVERALL
Style DesignatorSTRAIGHT JAW
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5120-00-690-7328J3752 INTERCHANGEABLE
Wrench,open End Box
The Stanley Works Dba Stanley Proto
5120-01-428-8298RXS12B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8305RXS16B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8362RXS14B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8443RXS20B INTERCHANGEABLE
Wrench,open End Box
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-428-8526RXSM605B INTERCHANGEABLE
Wrench Set,open End and Open End
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-429-7381 INTERCHANGEABLE
Wrench Set,open End and Open End
Cross-Reference Index
Part NumberManufacturer
B107.100 CAT 40 TY2 General Services Administration Federal Supply Service (USA)
B107.100 The American Society of Mechanical Engineers (USA)
RXS18 Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
RXS18B PRIMARY Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA)
Related Parts
5120-00-690-7328INTERCHANGEABLE
WRENCH,OPEN END BOX
J3752
5120-01-428-8298INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS12B
5120-01-428-8305INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS16B
5120-01-428-8362INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS14B
5120-01-428-8443INTERCHANGEABLE
WRENCH,OPEN END BOX
RXS20B
5120-01-428-8526INTERCHANGEABLE
WRENCH SET,OPEN END AND OPEN END
RXSM605B
5120-01-429-7381INTERCHANGEABLE
WRENCH SET,OPEN END AND OPEN END

Frequently Asked Questions

What is NSN 5120-01-428-8384?

NSN 5120-01-428-8384 is a Wrench,open End Box, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-01-428-8384?

NSN 5120-01-428-8384 has 4 cross-referenced part numbers: B107.100 CAT 40 TY2 (General Services Administration Federal Supply Service), B107.100 (The American Society of Mechanical Engineers), RXS18 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), RXS18B (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).

What NSN replaces 5120-01-428-8384?

There are 7 known substitutes for 5120-01-428-8384: 5120-00-690-7328, 5120-01-428-8298, 5120-01-428-8305 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RXS18B?

Key specifications for RXS18B: Overall Length: 5.750 INCHES MINIMUM IN; Wrenching Surface Size: 0.562 INCHES NOMINAL BOTH ENDS IN; Wrenching Surface Shape: 6 POINT SECOND END INTERNAL; Material: STEEL OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-428-8384 still in active supply?

NSN 5120-01-428-8384 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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