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PartsTable / COMPONENT / 21-S-125-2000
21-S-125-2000 ✓ 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,SPRING is a the manufacturer industrial component. Key specifications include diameter: 0.125 INCHES NOMINAL IN, material: STEEL OVERALL, overall_length: 2.000 INCHES NOMINAL IN, shear_strength: 210000 DOUBLE POUNDS PER SQUARE INCH, style_designator: SLOTTED, features_provided: CASEHARDENED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-075-1085, 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
21-S-125-2000
NSN: 5315-01-075-1085
FSC: 5315
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
diameter0.125 INCHES NOMINAL IN
materialSTEEL OVERALL
overall_length2.000 INCHES NOMINAL IN
shear_strength210000 DOUBLE POUNDS PER SQUARE INCH
style_designatorSLOTTED
features_providedCASEHARDENED
material_thickness0.028 INCHES NOMINAL IN
nondefinitive_spec/std_data1 TYPE AND 2 CLASS AND A COMPOSITION
NSN5315-01-075-1085
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21-S-125-2000 · 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
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 2 CLASS AND A COMPOSITION
•
MATERIAL: STEEL OVERALL
•
MATERIAL THICKNESS: 0.028 INCHES NOMINAL IN
•
FEATURES PROVIDED: CASEHARDENED
•
DIAMETER: 0.125 INCHES NOMINAL IN
•
SHEAR STRENGTH: 210000 DOUBLE POUNDS PER SQUARE INCH
•
STYLE DESIGNATOR: SLOTTED
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 2 CLASS AND A COMPOSITION
MATERIALSTEEL OVERALL
MATERIAL THICKNESS0.028 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
DIAMETER0.125 INCHES NOMINAL IN
SHEAR STRENGTH210000 DOUBLE POUNDS PER SQUARE INCH
OVERALL LENGTH2.000 INCHES NOMINAL IN
STYLE DESIGNATORSLOTTED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
SPS INDUSTRIES 21-S-250-1000Interchangeable
interchangeable cross-reference
interchangeable
DCSN01AT204Interchangeable
interchangeable cross-reference
interchangeable
5H3182Interchangeable
interchangeable cross-reference
interchangeable
115656263 ITEM 75Interchangeable
interchangeable cross-reference
interchangeable
42P11702-1200Interchangeable
interchangeable cross-reference
interchangeable
SF-10466 ITEM 4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-S-125-2000?
21-S-125-2000 is a PIN,SPRING.
What parts can replace 21-S-125-2000?
There are 16 known substitutes for 21-S-125-2000: SPS INDUSTRIES 21-S-250-1000, DCSN01AT204, 5H3182 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21-S-125-2000?
21-S-125-2000 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-075-1085. 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