PartsTable
Technical Data Sheet
30S1K6 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.187 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8584, 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
30S1K6
NSN: 5310-00-021-8584
FSC: 5310
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.187 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_across_flats0.4280 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch28
nondefinitive_spec/std_dataA TYPE
NSN5310-00-021-8584
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 30S1K6 · 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
BEARING SURFACE TYPE: WASHER FACED
THREAD QUANTITY PER INCH: 28
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.250 INCHES IN
NONDEFINITIVE SPEC/STD DATA: A TYPE
THREAD CLASS: 2B
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPEWASHER FACED
THREAD QUANTITY PER INCH28
THREAD SERIESUNF
NOMINAL THREAD SIZE0.250 INCHES IN
NONDEFINITIVE SPEC/STD DATAA TYPE
THREAD CLASS2B
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NUT STYLEHEXAGON
NUT HEIGHT0.187 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
561653Interchangeable
interchangeable cross-reference
interchangeable
7010-02Interchangeable
interchangeable cross-reference
interchangeable
A83269Interchangeable
interchangeable cross-reference
interchangeable
909552Interchangeable
interchangeable cross-reference
interchangeable
114Interchangeable
interchangeable cross-reference
interchangeable
906200Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 30S1K6?
30S1K6 is a NUT,PLAIN,HEXAGON.
What parts can replace 30S1K6?
There are 16 known substitutes for 30S1K6: 561653, 7010-02, A83269 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 30S1K6?
30S1K6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-021-8584. This indicates validated use in U.S. government and defense supply chains.
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