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Technical Data Sheet
J-7757-2 ✓ 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 LOCKNUT,RAPID ALIGNMENT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_test_features: SOCKETS ARE DESIGNED FOR USE WITH 3/4" SQUARE-DRIVE MANUAL TOOLS ONLY; OPENING SIZE (8PT) 3-13/16", hole_configuration_style: CONFIGURATION BCONFIGURATION B, part_name_assigned_by_controlling_agency: 8-PT LOCKNUT SOCKET8-PT LOCKNUT SOCKET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-097-6949, 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
J-7757-2
NSN: 5310-01-097-6949
FSC: 5310
CAGE: 33287 — BOSCH AUTOMOTIVE SERVICE SOLUTIONS INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresHIGH-GRADE TRUCK WHEEL BEARING LOCKNUT SOCKET IS MADE OF HIGH-STRENGTH STEELHIGH-GRADE TRUCK WHEEL BEARING LOCKNUT SOCKET IS MADE OF HIGH-STRENGTH STEEL
special_test_featuresSOCKETS ARE DESIGNED FOR USE WITH 3/4" SQUARE-DRIVE MANUAL TOOLS ONLY; OPENING SIZE (8PT) 3-13/16"
hole_configuration_styleCONFIGURATION BCONFIGURATION B
part_name_assigned_by_controlling_agency8-PT LOCKNUT SOCKET8-PT LOCKNUT SOCKET
NSN5310-01-097-6949
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: J-7757-2 · 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 CONFIGURATION STYLE: CONFIGURATION BCONFIGURATION B
MATERIAL: STEEL OVERALL
SPECIAL TEST FEATURES: SOCKETS ARE DESIGNED FOR USE WITH 3/4" SQUARE-DRIVE MANUAL TOOLS ONLY; OPENING SIZE (8PT) 3-13/16"
TECHNICAL CHARACTERISTICS (FLIS)
HOLE CONFIGURATION STYLECONFIGURATION BCONFIGURATION B
MATERIALSTEEL OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCY8-PT LOCKNUT SOCKET8-PT LOCKNUT SOCKET
SPECIAL FEATURESHIGH-GRADE TRUCK WHEEL BEARING LOCKNUT SOCKET IS MADE OF HIGH-STRENGTH STEELHIGH-GRADE TRUCK WHEEL BEARING LOCKNUT SOCKET IS MADE OF HIGH-STRENGTH STEEL
SPECIAL TEST FEATURESSOCKETS ARE DESIGNED FOR USE WITH 3/4" SQUARE-DRIVE MANUAL TOOLS ONLY; OPENING SIZE (8PT) 3-13/16"
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
E-172-043-434Interchangeable
interchangeable cross-reference
interchangeable
1927Interchangeable
interchangeable cross-reference
interchangeable
MILB857TYPE3STYLEA0RBInterchangeable
interchangeable cross-reference
interchangeable
1927-61Interchangeable
interchangeable cross-reference
interchangeable
829Interchangeable
interchangeable cross-reference
interchangeable
A-A-888Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J-7757-2?
J-7757-2 is a LOCKNUT,RAPID ALIGNMENT.
What parts can replace J-7757-2?
There are 14 known substitutes for J-7757-2: E-172-043-434, 1927, MILB857TYPE3STYLEA0RB and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J-7757-2?
J-7757-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-097-6949. This indicates validated use in U.S. government and defense supply chains.
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