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Technical Data Sheet
PartsTable / COMPONENT / 3957-12 20
3957-12 20 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The DRILL,TWIST is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, point_type: SPLIT, point_angle: 118.0 DEGREES NOMINAL, shank_style: STRAIGHT ROUND, flute_length: 2.125 INCHES NOMINAL IN, overall_length: 12.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5133-00-595-8858, 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
3957-12 20
NSN: 5133-00-595-8858
FSC: 5133
CAGE: 60NQ9 — GREENFIELD INDUSTRIES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
point_typeSPLIT
point_angle118.0 DEGREES NOMINAL
shank_styleSTRAIGHT ROUND
flute_length2.125 INCHES NOMINAL IN
flute_quantity2
overall_length12.000 INCHES NOMINAL IN
shank_diameter0.161 INCHES NOMINAL IN
special_featuresAIRCRAFT EXTENSION TYPE; WIRE SIZE 20
cutting_end_styleGENERAL PURPOSE
nominal_cutting_diameter0.1610 INCHES IN
cutting_rotation_directionRIGHT-HAND
NSN5133-00-595-8858
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available DRILL,TWIST TITLE COMPONENT PN 3957-12 20 MFR DRILL,TWIST
KEY FEATURES
•
FLUTE LENGTH: 2.125 INCHES NOMINAL IN
•
CUTTING END STYLE: GENERAL PURPOSE
•
CUTTING ROTATION DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
•
POINT ANGLE: 118.0 DEGREES NOMINAL
•
FLUTE QUANTITY: 2
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH12.000 INCHES NOMINAL IN
FLUTE LENGTH2.125 INCHES NOMINAL IN
CUTTING END STYLEGENERAL PURPOSE
CUTTING ROTATION DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
SPECIAL FEATURESAIRCRAFT EXTENSION TYPE; WIRE SIZE 20
POINT ANGLE118.0 DEGREES NOMINAL
FLUTE QUANTITY2
SHANK DIAMETER0.161 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAA TYPE AND 20 SIZE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
4A00A48-3Interchangeable
interchangeable cross-reference
interchangeable
06106Interchangeable
interchangeable cross-reference
interchangeable
1M422DInterchangeable
interchangeable cross-reference
interchangeable
ASTM-D2466Interchangeable
interchangeable cross-reference
interchangeable
407-005Interchangeable
interchangeable cross-reference
interchangeable
10627683Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3957-12 20?
3957-12 20 is a DRILL,TWIST.
What parts can replace 3957-12 20?
There are 11 known substitutes for 3957-12 20: 4A00A48-3, 06106, 1M422D and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3957-12 20?
3957-12 20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5133-00-595-8858. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026