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PartsTable / COMPONENT / FRS ET4MM
FRS ET4MM ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The KEY,SOCKET HEAD SCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, long_arm_length: 2.680 INCHES NOMINAL IN, short_arm_length: 0.940 INCHES NOMINAL IN, style_designator: L-HANDLE, features_provided: SHORT SERIES, surface_treatment: OXIDE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-01-644-3457, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
FRS ET4MM
NSN: 5120-01-644-3457
FSC: 5120
CAGE: 55719 — IDSC HOLDINGS LLC DIV SNAP-ON INDUSTRIAL, A DIV. OF IDSC HOLDINGS , LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
long_arm_length2.680 INCHES NOMINAL IN
short_arm_length0.940 INCHES NOMINAL IN
style_designatorL-HANDLE
features_providedSHORT SERIES
surface_treatmentOXIDE OVERALL
wrenching_surface_size4.0 MILLIMETERS NOMINAL BOTH ENDS MM
wrenching_surface_shapeHEXAGON BOTH ENDS EXTERNAL
NSN5120-01-644-3457
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available KEY,SOCKET HEAD SCREW TITLE COMPONENT PN FRS ET4MM MFR KEY,SOCKET HEAD SCREW
KEY FEATURES
•
LONG ARM LENGTH: 2.680 INCHES NOMINAL IN
•
WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS EXTERNAL
•
STYLE DESIGNATOR: L-HANDLE
•
FEATURES PROVIDED: SHORT SERIES
•
SURFACE TREATMENT: OXIDE OVERALL
•
SHORT ARM LENGTH: 0.940 INCHES NOMINAL IN
•
WRENCHING SURFACE SIZE: 4.0 MILLIMETERS NOMINAL BOTH ENDS MM
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
LONG ARM LENGTH2.680 INCHES NOMINAL IN
WRENCHING SURFACE SHAPEHEXAGON BOTH ENDS EXTERNAL
STYLE DESIGNATORL-HANDLE
FEATURES PROVIDEDSHORT SERIES
SURFACE TREATMENTOXIDE OVERALL
SHORT ARM LENGTH0.940 INCHES NOMINAL IN
WRENCHING SURFACE SIZE4.0 MILLIMETERS NOMINAL BOTH ENDS MM
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
SMB531671Interchangeable
interchangeable cross-reference
interchangeable
15-508Interchangeable
interchangeable cross-reference
interchangeable
GGG-R-180Interchangeable
interchangeable cross-reference
interchangeable
GGG-R-180 TY8CL1GRASZ8Interchangeable
interchangeable cross-reference
interchangeable
748Interchangeable
interchangeable cross-reference
interchangeable
23040Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FRS ET4MM?
FRS ET4MM is a KEY,SOCKET HEAD SCREW.
What parts can replace FRS ET4MM?
There are 11 known substitutes for FRS ET4MM: SMB531671, 15-508, GGG-R-180 and 8 more. Substitute compatibility should be verified for your specific system.
Is FRS ET4MM still available?
FRS ET4MM is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026