PartsTable
Technical Data Sheet
PartsTable / COMPONENT / B4525-308-23
B4525-308-23 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.193 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, outside_diameter: 0.434 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM AND CHROMATE OVERALL, material_thickness: 0.068 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN, end_item_identification: 2350-01-048-5920. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-721-7809, 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
B4525-308-23
NSN: 5310-00-721-7809
FSC: 5310
CAGE: 60532 — TRANE U.S. INC. DBA THE TRANE CO DIV TRANE HEADQUARTERS (USA)
SPECIFICATIONS
hole_diameter0.193 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
outside_diameter0.434 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.068 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
end_item_identification2350-01-048-5920
nondefinitive_spec/std_data4 STYLE AND A CLASS
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-721-7809
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B4525-308-23 · 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 DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL: STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
OUTSIDE DIAMETER: 0.434 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.068 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.193 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIALSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
OUTSIDE DIAMETER0.434 INCHES MAXIMUM IN
MATERIAL THICKNESS0.068 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN
HOLE DIAMETER0.193 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
END ITEM IDENTIFICATION2350-01-048-5920
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA4 STYLE AND A CLASS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
502331Interchangeable
interchangeable cross-reference
interchangeable
61085Interchangeable
interchangeable cross-reference
interchangeable
FFW84CLASSASTYLE4Interchangeable
interchangeable cross-reference
interchangeable
MS35340-29Interchangeable
interchangeable cross-reference
interchangeable
681948PC5Interchangeable
interchangeable cross-reference
interchangeable
12Z22PC284Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy B4525-308-23?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is B4525-308-23?
B4525-308-23 is a WASHER,LOCK.
What parts can replace B4525-308-23?
There are 17 known substitutes for B4525-308-23: 502331, 61085, FFW84CLASSASTYLE4 and 14 more. Substitute compatibility should be verified for your specific system.
Is B4525-308-23 still available?
B4525-308-23 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — B4525-308-23

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026