PartsTable
Technical Data Sheet
MS27040-8 ✓ 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,SQUARE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SQUARE, nut_height: 0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), hardness_rating: 103.0 BRINELL STANDARD MINIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-982-4937, 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
MS27040-8
NSN: 5310-00-982-4937
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSQUARE
nut_height0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
hardness_rating103.0 BRINELL STANDARD MINIMUM
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
nominal_thread_size0.190 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch24
NSN5310-00-982-4937
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS27040-8 · 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
SURFACE TREATMENT: CADMIUM OVERALL
NUT HEIGHT: 0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
WIDTH ACROSS FLATS: 0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
THREAD DIRECTION: RIGHT-HAND
HARDNESS RATING: 103.0 BRINELL STANDARD MINIMUM
THREAD QUANTITY PER INCH: 24
BEARING SURFACE TYPE: WASHER FACED
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OVERALL
NUT HEIGHT0.117 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
HARDNESS RATING103.0 BRINELL STANDARD MINIMUM
THREAD QUANTITY PER INCH24
BEARING SURFACE TYPEWASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.190 INCHES IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
S04706-004Interchangeable
interchangeable cross-reference
interchangeable
8676-3Interchangeable
interchangeable cross-reference
interchangeable
4706-4Interchangeable
interchangeable cross-reference
interchangeable
8023Interchangeable
interchangeable cross-reference
interchangeable
A8023Interchangeable
interchangeable cross-reference
interchangeable
E9035Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS27040-8?
MS27040-8 is a NUT,PLAIN,SQUARE.
What parts can replace MS27040-8?
There are 17 known substitutes for MS27040-8: S04706-004, 8676-3, 4706-4 and 14 more. Substitute compatibility should be verified for your specific system.
Is MS27040-8 still available?
MS27040-8 is currently cancelled.
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