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Technical Data Sheet
PartsTable / COMPONENT / BM11399-72
BM11399-72 ✓ 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: 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, outside_diameter: 0.741 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM OVERALL, material_thickness: 0.123 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN, end_item_identification: MRAP - M-ATV DV178. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-959-4675, 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
BM11399-72
NSN: 5310-00-959-4675
FSC: 5310
CAGE: 19422 — DEMARKUS CORP REFRIGERATION ENGINEERING CORP (USA)
SPECIFICATIONS
hole_diameter0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
outside_diameter0.741 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM OVERALL
material_thickness0.123 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
end_item_identificationMRAP - M-ATV DV178
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
NSN5310-00-959-4675
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BM11399-72 · 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
•
HOLE DIAMETER: 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.741 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 4 STYLE AND A CLASS
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
HOLE DIAMETER0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.741 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONMRAP - M-ATV DV178
SURFACE TREATMENTCADMIUM OVERALL
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
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
MATERIAL THICKNESS0.123 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
B93-2Interchangeable
interchangeable cross-reference
interchangeable
B93SET2Interchangeable
interchangeable cross-reference
interchangeable
B93HYT2Interchangeable
interchangeable cross-reference
interchangeable
20C3027-1Interchangeable
interchangeable cross-reference
interchangeable
20C3027-3Interchangeable
interchangeable cross-reference
interchangeable
20C3027-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BM11399-72?
BM11399-72 is a WASHER,LOCK.
What parts can replace BM11399-72?
There are 28 known substitutes for BM11399-72: B93-2, B93SET2, B93HYT2 and 25 more. Substitute compatibility should be verified for your specific system.
Is BM11399-72 still available?
BM11399-72 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026