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57A14B21 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

57A14B21: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include nut_length: 0.123 INCHES NOMINAL IN, thread_class: 2B, boss_diameter: 0.313 INCHES NOMINAL OVERALL IN, thread_series: UNF, boss_thickness: 0.033 INCHES NOMINAL OVERALL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-730-2660, 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
57A14B21
NSN: 5310-00-730-2660
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
nut_length0.123 INCHES NOMINAL IN
thread_class2B
boss_diameter0.313 INCHES NOMINAL OVERALL IN
thread_seriesUNF
boss_thickness0.033 INCHES NOMINAL OVERALL IN
thread_directionRIGHT-HAND
nominal_thread_size0.190 INCHES IN
cross-sectional_shapeROUND NUT
hole_configuration_styleCONFIGURATION H
thread_quantity_per_inch32
material_document_and_classificationSAE 73 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-00-730-2660
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 57A14B21 · 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 LENGTH: 0.123 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
HOLE CONFIGURATION STYLE: CONFIGURATION H
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 73 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
BOSS THICKNESS: 0.033 INCHES NOMINAL OVERALL IN
•
CROSS-SECTIONAL SHAPE: HEXAGONAL FLANGE
TECHNICAL CHARACTERISTICS
NUT LENGTH0.123 INCHES NOMINAL IN
THREAD SERIESUNF
HOLE CONFIGURATION STYLECONFIGURATION H
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 73 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
BOSS THICKNESS0.033 INCHES NOMINAL OVERALL IN
CROSS-SECTIONAL SHAPEHEXAGONAL FLANGE
CROSS-SECTIONAL SHAPEROUND NUT
BOSS DIAMETER0.313 INCHES NOMINAL OVERALL IN
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 57A14B21?
57A14B21 is a NUT,SLEEVE.
What is the NSN for 57A14B21?
57A14B21 is cataloged in the U.S. Government catalog under NSN 5310-00-730-2660. This indicates validated use in U.S. government and defense supply chains.
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