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Technical Data Sheet
PartsTable / COMPONENT / 221984
221984 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.250 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN, fastener_length: 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-022-1984, 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
221984
NSN: 5306-00-022-1984
FSC: 5306
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
thread_class2A A
thread_length1.250 INCHES MINIMUM AND 1.438 INCHES MAXIMUM IN
fastener_length1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
hardness_rating19.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
locking_featureDISTORTIONS BEARING SURFACE OF HEAD
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
NSN5306-00-022-1984
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 221984 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD STYLE: HEXAGON
•
FASTENER LENGTH: 1.468 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN
•
FEATURES PROVIDED: FINISHED HEAD
•
LOCKING FEATURE: DISTORTIONS BEARING SURFACE OF HEAD
•
MATERIAL: STEEL COMP 1035 OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNF
•
HARDNESS RATING: 96.0 ROCKWELL B MINIMUM AND 104.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HEAD STYLEHEXAGON
FASTENER LENGTH1.468 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN
FEATURES PROVIDEDFINISHED HEAD
LOCKING FEATUREDISTORTIONS BEARING SURFACE OF HEAD
MATERIALSTEEL COMP 1035 OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNF
HARDNESS RATING96.0 ROCKWELL B MINIMUM AND 104.0 ROCKWELL C MAXIMUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
THREAD QUANTITY PER INCH20
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MS35763-1069Upgraded Successor
successor cross-reference
successor
221984Upgraded Successor
successor cross-reference
successor
86553R11Interchangeable
interchangeable cross-reference
interchangeable
10-10-10 120401BAInterchangeable
interchangeable cross-reference
interchangeable
J246Interchangeable
interchangeable cross-reference
interchangeable
LS-221000-L014-L111Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 221984?
221984 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 221984?
There are 7 known substitutes for 221984: MS35763-1069, 221984, 86553R11 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 221984?
221984 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-022-1984. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026