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556-7015844-27 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

556-7015844-27: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, nut_style: HEXAGON, nut_height: 1.062 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), hardness_rating: 75.0 ROCKWELL B MINIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-507-3241, 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
556-7015844-27
NSN: 5310-01-507-3241
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
nut_styleHEXAGON
nut_height1.062 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
hardness_rating75.0 ROCKWELL B MINIMUM
special_featuresMATERIAL IS NICKEL-COPPER
thread_directionRIGHT-HAND
width_across_flats1.875 INCHES NOMINAL IN
nominal_thread_size1.250 INCHES IN
end_item_identificationMANIFOLD ASSEMBLY;W/S:VIRGINIA CLASS SUBMARINE, SSN-774
hole_configuration_styleCONFIGURATION C
NSN5310-01-507-3241
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 556-7015844-27 · 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: 1.875 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 75.0 ROCKWELL B MINIMUM
•
HOLE CONFIGURATION STYLE: CONFIGURATION C
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-F467 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
NUT HEIGHT: 1.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.875 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING75.0 ROCKWELL B MINIMUM
HOLE CONFIGURATION STYLECONFIGURATION C
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-F467 ASSN STD ALL MATERIAL RESPONSES OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.250 INCHES IN
NUT HEIGHT1.062 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL IS NICKEL-COPPER
NUT STYLEHEXAGON
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 2
1.250-7UNC-2B-NICUSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
H791-7000-27Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 556-7015844-27?
556-7015844-27 is a NUT,PLAIN,HEXAGON.
What parts can replace 556-7015844-27?
There are 2 known substitutes for 556-7015844-27: 1.250-7UNC-2B-NICU, H791-7000-27. Substitute compatibility should be verified for your specific system.
What is the NSN for 556-7015844-27?
556-7015844-27 is cataloged in the U.S. Government catalog under NSN 5310-01-507-3241. 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.