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SCB70003 ✓ 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 NUT,PLAIN,ASSEMBLED WASHER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1117 OVERALL, nut_style: FLAT WITH TURNED BACK EDGE, nut_height: 0.180 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, overall_height: 0.328 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 5310-00-521-8480, 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
SCB70003
NSN: 5310-00-521-8480
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL COMP 1117 OVERALL
nut_styleFLAT WITH TURNED BACK EDGE
nut_height0.180 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
overall_height0.328 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle82.0 DEGREES NOMINAL NUT
features_providedCASEHARDENED
surface_treatmentPHOSPHATE MANGANESE OVERALL
width_across_flats0.370 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
NSN5310-00-521-8480
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SCB70003 · 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
•
WIDTH ACROSS FLATS: 0.370 INCHES NOMINAL IN
•
FEATURES PROVIDED: CASEHARDENED
•
THREAD QUANTITY PER INCH: 32
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
COUNTERSINK ANGLE: 82.0 DEGREES NOMINAL NUT
•
MATERIAL: STEEL COMP 1117 OVERALL
•
NUT HEIGHT: 0.180 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.370 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
THREAD QUANTITY PER INCH32
THREAD SERIESUNF
NOMINAL THREAD SIZE0.190 INCHES IN
COUNTERSINK ANGLE82.0 DEGREES NOMINAL NUT
MATERIALSTEEL COMP 1117 OVERALL
NUT HEIGHT0.180 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE MANGANESE OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
64NBC2078YZP2CInterchangeable
interchangeable cross-reference
interchangeable
64NBC2078YZPANG2Interchangeable
interchangeable cross-reference
interchangeable
64NBC2078YZPInterchangeable
interchangeable cross-reference
interchangeable
50564Interchangeable
interchangeable cross-reference
interchangeable
GGG-L-211 TY2CL1STAInterchangeable
interchangeable cross-reference
interchangeable
132-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SCB70003?
SCB70003 is a NUT,PLAIN,ASSEMBLED WASHER.
What parts can replace SCB70003?
There are 10 known substitutes for SCB70003: 64NBC2078YZP2C, 64NBC2078YZPANG2, 64NBC2078YZP and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SCB70003?
SCB70003 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-521-8480. 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