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FFB571TYPEA — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

FFB571TYPEA: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.210 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, hardness_rating: 95.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-010-2634, 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
FFB571TYPEA
NSN: 5310-00-010-2634
NIINs: 000102634, 000102635, 000102638, 000103027, 000103029, 000103043, 000103046, 000103047, 000103048, 000103050, 000103051, 000109084, 000109879, 000109880, 000109881, 000110812, 000110813, 000110814, 000110816, 000113740, 000114492, 000114496, 000114498, 000114499, 000114501, 000114504, 000114505, 000114507, 000114545, 000114546, 000115287, 000115728, 000115729, 000115733, 000115772, 000115774, 000117048, 000117050, 000117051, 000117052, 000117053, 000117054, 000117056, 000117061, 000117062, 000117063, 000118619, 000118623, 000118627, 000120238, 000120370, 000120613, 000120689, 000121358, 000121917, 000121932, 000121983, 000122002, 000122021, 000122039, 000122161, 000122193, 000122198, 000122230, 000122236, 000122264, 000122403, 000122407, 000122432, 000122531, 000123190, 000123197, 000123228, 000123263, 000123274, 000123328, 000123475, 000123550, 000124595, 000124607, 000124645, 000124829, 000124834, 000124934, 000124939, 000124944, 000124949, 000124954, 000124959, 000125013, 000125016, 000125027, 000125035, 000125043, 000125063, 000125071, 000125079, 000125629, 000125653, 000125913, 000126189, 000127855, 000128117, 000128122, 000131807, 000140631, 000140635, 000143415, 000143416, 000179137, 000213549, 000214267, 000214442, 000216353, 000216371, 000218196, 000218197, 000218200, 000218408, 000218474, 000218564, 000218565, 000218570, 000218582, 000218584, 000218585, 000218588, 000218589, 000218593, 000218594, 000218597, 000218599, 000219431, 000219432, 000219433, 000220064, 000220065, 000220066, 000220067, 000220070, 000220071, 000220072, 000220073, 000220078, 000220079, 000220082, 000220083, 000220085, 000220087, 000220088, 000220094, 000221157, 000225831, 000225851, 000225853, 000225854, 000225857, 000225861, 000422890, 000422964, 000422988, 000426099, 000426395, 000426396, 000426397, 000427018, 000427315, 000427356, 000427360, 000427363, 000427367, 000427369, 000432769, 000443921, 000444276, 000454777, 000503113, 000503114, 000571230, 000571237, 000571239, 000571240, 000571241, 000587503, 002206732, 002985032, 005845005, 008381702, 008807746, 009135472, 009752075, 009824938
FSC: 5310 — Nuts and Washers
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.210 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
hardness_rating95.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
special_featuresAA
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
NSN5310-00-010-2634
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FFB571TYPEA · 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: 0.500 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
NUT HEIGHT: 0.266 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
NUT HEIGHT0.266 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH18
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 8
102634Reference document
Same NSN cross-reference
Reference document — Secondary reference
33797SReference document
Same NSN cross-reference
Reference document — Secondary reference
M15165Reference document
Same NSN cross-reference
Reference document — Secondary reference
BBTX1CBReference document
Same NSN cross-reference
Reference document — Secondary reference
5116-18UNC2BReference document
Same NSN cross-reference
Reference document — Secondary reference
704717Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FFB571TYPEA?
FFB571TYPEA is a NUT,PLAIN,HEXAGON.
What parts can replace FFB571TYPEA?
There are 8 known substitutes for FFB571TYPEA: 102634, 33797S, M15165 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FFB571TYPEA?
FFB571TYPEA is cataloged in the U.S. Government catalog under NSN 5310-00-010-2634. This indicates validated use in U.S. government and defense supply chains.
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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.