PartsTable
Technical Data Sheet
4257 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

RATCHET ATTACHMENT,SOCKET WRENCH. Key specifications include jaw_type: SLIGHTLY CURVED, material: PLASTIC VINYL, design_type: FRICTION, overall_length: 7.500 INCHES NOMINAL IN, basic_shape_style: CYLINDRICAL, design_designation: SCHMIDT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-613-4472, 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
MRO MRO_GENERAL 4257
NSN: 6145-00-613-4472
FSC: 6145
CAGE: 3ET41 — RSCC WIRE & CABLE LLC DBA MARMON INDUSTRIAL ENERGY & INFRASTRUCTURE - EAST GRANBY (USA)
SPECIFICATIONS
jaw_typeSLIGHTLY CURVED
materialPLASTIC VINYL
design_typeFRICTION
overall_length7.500 INCHES NOMINAL IN
special_featuresMANUFACTURER DWG NAME-ASA FLANGE COVER; PRODUCT FEATURES IS TO RESIST WEATHER, MOISTURE AND CHEMICALS AND ALSO CUSHIONS AGAINST ABRASIVE CONTACTS
basic_shape_styleCYLINDRICAL
design_designationSCHMIDT
inside_diameter_length0.460 INCHES NOMINAL IN
end_item_identificationF119 ENGINES
round_cap_outside_surface_conditionSMOOTH
part_name_assigned_by_controlling_agencyFORCEPS TONSIL ARTERY SCHMIDT; SLIGHTLY CURVED 7.5IN. LG SS IN
tube_outside_diameter_for_which_designed4.250 INCHES NOMINAL IN
NSN6145-00-613-4472
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 4257 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
STRAND QUANTITY PER CONDUCTOR: 7 ALL CONDUCTORS
MATERIAL: STEEL CORE CONDUCTOR ALL CONDUCTORS
CONDUCTOR FORM: STRANDED ALL CONDUCTORS
ROUND CONDUCTOR SIZE: 24 AWG ALL CONDUCTORS
STRAND AWG SIZE PER CONDUCTOR: 32 ALL CONDUCTORS
NOMINAL CAPACITANCE IN PICOFARADS: 15.0 PER FOOT
CONDUCTOR ARRANGEMENT AND QUANTITY: 3 COAXIAL
TECHNICAL CHARACTERISTICS (FLIS)
STRAND QUANTITY PER CONDUCTOR7 ALL CONDUCTORS
MATERIALSTEEL CORE CONDUCTOR ALL CONDUCTORS
CONDUCTOR FORMSTRANDED ALL CONDUCTORS
ROUND CONDUCTOR SIZE24 AWG ALL CONDUCTORS
STRAND AWG SIZE PER CONDUCTOR32 ALL CONDUCTORS
MATERIALCOPPER FIRST POSITION CONDUCTOR ALL CONDUCTORS
NOMINAL CAPACITANCE IN PICOFARADS15.0 PER FOOT
CONDUCTOR ARRANGEMENT AND QUANTITY3 COAXIAL
CROSS-SECTIONAL SHAPE STYLEROUND
CROSS SECTION OUTSIDE DIAMETER0.770 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
4257Upgraded Successor
successor cross-reference
successor
0425-007Interchangeable
interchangeable cross-reference
interchangeable
8942871P1Interchangeable
interchangeable cross-reference
interchangeable
B107.10Interchangeable
interchangeable cross-reference
interchangeable
B107.10 TY2CL3STAInterchangeable
interchangeable cross-reference
interchangeable
P4330551-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4257?
4257 is a RATCHET ATTACHMENT,SOCKET WRENCH. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4257?
There are 9 known substitutes for 4257: 4257, 0425-007, 8942871P1 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4257?
4257 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-613-4472. This indicates validated use in U.S. government and defense supply chains.
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