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SPS-N-53568-12 — NUT,SELF-LOCKING,DOUBLE HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SPS-N-53568-12: NUT,SELF-LOCKING,DOUBLE HEXAGON.

NUT,SELF-LOCKING,DOUBLE HEXAGON. Key specifications include material: STEEL OVERALL, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), special_features: MATERIAL: ALLOY STEEL PER AMS 6304 OR AMS 6322, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-443-9839, 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
SPS-N-53568-12
NSN: 5310-01-443-9839
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
temp_rating450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
special_featuresMATERIAL: ALLOY STEEL PER AMS 6304 OR AMS 6322
surface_treatmentCADMIUM OVERALL
width_across_flats1.200 INCHES MINIMUM IN
nominal_thread_size0.750 INCHES IN
special_test_featuresFLIGHT SAFETY CRITICAL
supplementary_featuresHEAT TREATMENT: HARDNESS RC-38-45; FINISH: CADMIUM PLATE PER QQ-P-416, TYPE II, CLASS 2, PLUS MOLYBDENUM DISULFIDE DRY FILM LUBRICANT
hole_configuration_styleCONFIGURATION G
thread_quantity_per_inch16
NSN5310-01-443-9839
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SPS-N-53568-12 · 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: 1.200 INCHES MINIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
SPECIAL TEST FEATURES: FLIGHT SAFETY CRITICAL
•
TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF
•
SUPPLEMENTARY FEATURES: HEAT TREATMENT: HARDNESS RC-38-45; FINISH: CADMIUM PLATE PER QQ-P-416, TYPE II, CLASS 2, PLUS MOLYBDENUM DISULFIDE DRY FILM LUBRICANT
•
CRITICALITY CODE JUSTIFICATION: SPCL
•
HOLE CONFIGURATION STYLE: CONFIGURATION G
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.200 INCHES MINIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE II, CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
SPECIAL TEST FEATURESFLIGHT SAFETY CRITICAL
TEMP RATING450.0 FAHRENHEIT MAXIMUM DEGF
SUPPLEMENTARY FEATURESHEAT TREATMENT: HARDNESS RC-38-45; FINISH: CADMIUM PLATE PER QQ-P-416, TYPE II, CLASS 2, PLUS MOLYBDENUM DISULFIDE DRY FILM LUBRICANT
CRITICALITY CODE JUSTIFICATIONSPCL
HOLE CONFIGURATION STYLECONFIGURATION G
NOMINAL THREAD SIZE0.750 INCHES IN
SPECIAL FEATURESMATERIAL: ALLOY STEEL PER AMS 6304 OR AMS 6322
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 4
HS5763-12Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
EWSN26M-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
H54657-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VN5400A12Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SPS-N-53568-12?
SPS-N-53568-12 is a NUT,SELF-LOCKING,DOUBLE HEXAGON.
What parts can replace SPS-N-53568-12?
There are 4 known substitutes for SPS-N-53568-12: HS5763-12, EWSN26M-12, H54657-12 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SPS-N-53568-12?
SPS-N-53568-12 is cataloged in the U.S. Government catalog under NSN 5310-01-443-9839. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.