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Technical Data Sheet
PartsTable / MRO / 121641
121641 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, duty_type: CONTINUOUS, bore_shape: STRAIGHT, bore_diameter: 1.0000 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN, hole_diameter: 0.288 INCHES NOMINAL IN, overall_width: 0.8650 INCHES MINIMUM AND 0.8850 INCHES MAXIMUM 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 5310-00-012-1641, 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→ 121641
NSN: 5310-00-012-1641
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
duty_typeCONTINUOUS
bore_shapeSTRAIGHT
bore_diameter1.0000 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM IN
coil_quantity1
hole_diameter0.288 INCHES NOMINAL IN
overall_width0.8650 INCHES MINIMUM AND 0.8850 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
load_directionRADIAL
overall_height0.510 INCHES NOMINAL IN
overall_length1.710 INCHES NOMINAL IN
surface_finishUNGROUND
NSN5310-00-012-1641
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121641 · 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
•
HOLE DIAMETER: 0.288 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1010 OVERALL
•
STYLE DESIGNATOR: FINISHING
•
MATERIAL THICKNESS: 0.018 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.150 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
HOLE DIAMETER0.288 INCHES NOMINAL IN
MATERIALSTEEL COMP 1010 OVERALL
STYLE DESIGNATORFINISHING
MATERIAL THICKNESS0.018 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.771 INCHES MINIMUM AND 0.791 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
B07A932BC1-0282Interchangeable
interchangeable cross-reference
interchangeable
BR7X300D7-26VDCInterchangeable
interchangeable cross-reference
interchangeable
525Interchangeable
interchangeable cross-reference
interchangeable
102-244-5PC565Interchangeable
interchangeable cross-reference
interchangeable
1216-41Interchangeable
interchangeable cross-reference
interchangeable
10105878-23Interchangeable
R0t0r Assembly
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121641?
121641 is a RELAY,ELECTROMAGNETIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 121641?
There are 14 known substitutes for 121641: B07A932BC1-0282, BR7X300D7-26VDC, 525 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121641?
121641 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-1641. 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