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PartsTable / COMPONENT / 409SB122-1
409SB122-1 ✓ 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 WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.642 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN, overall_height: 0.090 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN, hardness_rating: 49.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM, outside_diameter: 1.232 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN, style_designator: SPRING TENSION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-119-8932, 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
409SB122-1
NSN: 5310-01-119-8932
FSC: 5310
CAGE: 72121 — EATON MOTOR SITE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.642 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
overall_height0.090 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
hardness_rating49.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
outside_diameter1.232 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
style_designatorSPRING TENSION
material_thickness0.067 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN
material_document_and_classificationTYPE 50 CRV4,FSCM 05341 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-119-8932
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 409SB122-1 · 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
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
OUTSIDE DIAMETER: 1.232 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
•
HARDNESS RATING: 49.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: TYPE 50 CRV4,FSCM 05341 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SPRING TENSION
•
MATERIAL THICKNESS: 0.067 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.642 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
OUTSIDE DIAMETER1.232 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
HARDNESS RATING49.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONTYPE 50 CRV4,FSCM 05341 MFR REF SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSPRING TENSION
OVERALL HEIGHT0.090 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
MATERIAL THICKNESS0.067 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN
HOLE DIAMETER0.642 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
10-1800Interchangeable
interchangeable cross-reference
interchangeable
01-0900Interchangeable
interchangeable cross-reference
interchangeable
BS-31.5-16.3-1.75Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 409SB122-1?
409SB122-1 is a WASHER,SPRING TENSION.
What parts can replace 409SB122-1?
There are 3 known substitutes for 409SB122-1: 10-1800, 01-0900, BS-31.5-16.3-1.75. Substitute compatibility should be verified for your specific system.
What is the NSN for 409SB122-1?
409SB122-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-119-8932. 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