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211739 — BOLT,ECCENTRIC HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

211739: BOLT,ECCENTRIC HEAD.

The BOLT,ECCENTRIC HEAD is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DEE CHAMFER, head_height: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, thread_class: 1A A, head_diameter: 0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, fastener_length: 0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-320-2385, 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
211739
NSN: 5306-00-320-2385
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDEE CHAMFER
head_height0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
thread_class1A A
head_diameter0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
fastener_length0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
hardness_rating30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
internal_drive_styleW/O INTERNAL DRIVE
nominal_thread_diameter0.250 INCHES IN
thread_quantity_per_inch28
thread_series_designatorUNF
NSN5306-00-320-2385
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 211739 · 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 HEIGHT: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
DISTANCE FROM CENTER OF HEAD TO CENTER OF SHANK: 0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 7470 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: DEE CHAMFER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
FASTENER LENGTH0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO FLAT0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
DISTANCE FROM CENTER OF HEAD TO CENTER OF SHANK0.180 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 7470 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEDEE CHAMFER
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLEW/O INTERNAL DRIVE
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
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 211739?
211739 is a BOLT,ECCENTRIC HEAD.
What is the NSN for 211739?
211739 is cataloged in the U.S. Government catalog under NSN 5306-00-320-2385. 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.