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90591A181 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90591A181: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 10.0 MILLIMETERS NOMINAL MM, thread_class: 6H, hardness_rating: 20.0 ROCKWELL C NOMINAL, special_features: CLASS 8. TM 9-2330-103-23P AND TM 9-2330-338-13 AND P.

DIN SPEC 934. This part is cataloged in the U.S. Government catalog under NSN 5310-01-554-5146, 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
90591A181
NSN: 5310-01-554-5146
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height10.0 MILLIMETERS NOMINAL MM
thread_class6H
thread_seriesM
hardness_rating20.0 ROCKWELL C NOMINAL
special_featuresCLASS 8. TM 9-2330-103-23P AND TM 9-2330-338-13 AND P. DIN SPEC 934
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats19.0 MILLIMETERS NOMINAL MM
nominal_thread_size12.0 MILLIMETERS MM
bearing_surface_typeFLAT
NSN5310-01-554-5146
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90591A181 · 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
•
WIDTH ACROSS FLATS: 19.0 MILLIMETERS NOMINAL MM
•
THREAD SERIES: M
•
THREAD PITCH IN MILLIMETERS: 1.75
•
HARDNESS RATING: 20.0 ROCKWELL C NOMINAL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 12.0 MILLIMETERS MM
•
NUT HEIGHT: 10.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS19.0 MILLIMETERS NOMINAL MM
THREAD SERIESM
THREAD PITCH IN MILLIMETERS1.75
HARDNESS RATING20.0 ROCKWELL C NOMINAL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE12.0 MILLIMETERS MM
NUT HEIGHT10.0 MILLIMETERS NOMINAL MM
SPECIAL FEATURESCLASS 8. TM 9-2330-103-23P AND TM 9-2330-338-13 AND P. DIN SPEC 934
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYM12X1.75 ZINC-PLATED STEEL HEX NUT
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90591A181?
90591A181 is a NUT,PLAIN,HEXAGON.
What is the NSN for 90591A181?
90591A181 is cataloged in the U.S. Government catalog under NSN 5310-01-554-5146. This indicates validated use in U.S. government and defense supply chains.
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