PartsTable
Technical Data Sheet
162581 ✓ 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,SLOTTED,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8735 OR STEEL COMP 8740 OVERALL, nut_style: SLOTTED, HEXAGON, nut_height: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNF, hardness_rating: 19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-282-4785, 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
162581
NSN: 5310-00-282-4785
FSC: 5310
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
materialSTEEL COMP 8735 OR STEEL COMP 8740 OVERALL
nut_styleSLOTTED, HEXAGON
nut_height0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
hardness_rating19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM NUT
features_providedCASEHARDENED
surface_treatmentCADMIUM OVERALL
width_across_flats0.743 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
NSN5310-00-282-4785
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 162581 · 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: SLOTTED, HEXAGON
SURFACE TREATMENT: CADMIUM OVERALL
NUT HEIGHT: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
FEATURES PROVIDED: CASEHARDENED
NOMINAL THREAD SIZE: 0.500 INCHES IN
THREAD SERIES: UNF
HARDNESS RATING: 19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
THREAD QUANTITY PER INCH: 20
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLESLOTTED, HEXAGON
SURFACE TREATMENTCADMIUM OVERALL
NUT HEIGHT0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
FEATURES PROVIDEDCASEHARDENED
NOMINAL THREAD SIZE0.500 INCHES IN
THREAD SERIESUNF
HARDNESS RATING19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
THREAD QUANTITY PER INCH20
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
56550Interchangeable
interchangeable cross-reference
interchangeable
8000803Interchangeable
interchangeable cross-reference
interchangeable
311-377Interchangeable
interchangeable cross-reference
interchangeable
311-0377-00Interchangeable
interchangeable cross-reference
interchangeable
85692Interchangeable
interchangeable cross-reference
interchangeable
3658-0202Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 162581?
162581 is a NUT,PLAIN,SLOTTED,HEXAGON.
What parts can replace 162581?
There are 12 known substitutes for 162581: 56550, 8000803, 311-377 and 9 more. Substitute compatibility should be verified for your specific system.
Is 162581 still available?
162581 is currently cancelled.
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