PartsTable
Technical Data Sheet
BBSX1 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1212 NUT, nut_style: HEXAGON, nut_height: 0.141 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-3622, 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
BBSX1
NSN: 5310-00-050-3622
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 NUT
nut_styleHEXAGON
nut_height0.141 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC NUT
width_across_flats0.250 INCHES NOMINAL IN
nominal_thread_size0.125 INCHES IN
thread_quantity_per_inch40
material_document_and_classificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE NUT
NSN5310-00-050-3622
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BBSX1 · 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
NUT STYLE: HEXAGON
SURFACE TREATMENT: CADMIUM OR ZINC NUT
THREAD DIRECTION: RIGHT-HAND
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE: 0.125 INCHES IN
THREAD QUANTITY PER INCH: 40
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE NUT
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
SURFACE TREATMENTCADMIUM OR ZINC NUT
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.125 INCHES IN
THREAD QUANTITY PER INCH40
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE NUT
THREAD CLASS2B
NUT HEIGHT0.141 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
AS-2953/SPS-55Interchangeable
interchangeable cross-reference
interchangeable
7347Interchangeable
interchangeable cross-reference
interchangeable
720413Interchangeable
interchangeable cross-reference
interchangeable
5310000503622Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BBSX1?
BBSX1 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace BBSX1?
There are 4 known substitutes for BBSX1: AS-2953/SPS-55, 7347, 720413 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BBSX1?
BBSX1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-050-3622. This indicates validated use in U.S. government and defense supply chains.
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