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PartsTable / COMPONENT / 121-2F-12
121-2F-12 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The PIN,STRAIGHT,THREADED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, thread_class: 2A A, thread_length: 1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN, first_end_style: CHAMFERED, pin_grip_length: 1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-100-1238, 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
121-2F-12
NSN: 5315-01-100-1238
FSC: 5315
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thread_class2A A
thread_length1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN
first_end_styleCHAMFERED
pin_grip_length1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
first_end_locationTHREADED END
pin_overall_length6.500 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
pin_overall_diameter0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
first_end_taper_angle45.0 DEGREES NOMINAL
NSN5315-01-100-1238
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121-2F-12 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD CLASS: 2A A
•
FIRST END LOCATION: THREADED END
•
FIRST END TAPER LENGTH: 0.030 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
PIN GRIP LENGTH: 1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNF
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
FIRST END STYLE: CHAMFERED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
FIRST END LOCATIONTHREADED END
FIRST END TAPER LENGTH0.030 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
PIN GRIP LENGTH1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD SIZE0.250 INCHES IN
FIRST END STYLECHAMFERED
THREAD LENGTH1.030 INCHES MINIMUM AND 1.090 INCHES MAXIMUM IN
PIN OVERALL LENGTH6.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
A65SCInterchangeable
interchangeable cross-reference
interchangeable
AX65Interchangeable
interchangeable cross-reference
interchangeable
5530Interchangeable
interchangeable cross-reference
interchangeable
40138Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 1Interchangeable
interchangeable cross-reference
interchangeable
10170Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121-2F-12?
121-2F-12 is a PIN,STRAIGHT,THREADED.
What parts can replace 121-2F-12?
There are 15 known substitutes for 121-2F-12: A65SC, AX65, 5530 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121-2F-12?
121-2F-12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-100-1238. 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