PartsTable
Technical Data Sheet
Download PDF

2144559 — BOLT,INTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2144559: BOLT,INTERNALLY RELIEVED BODY.

The BOLT,INTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OR STEEL COMP 303SE OVERALL, head_style: KNURLED NO. 1, head_height: 0.250 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 1.000 INCHES NOMINAL IN, thread_length: 0.875 INCHES MINIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5306-00-415-7854, 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
2144559
NSN: 5306-00-415-7854
FSC: 5306 — Bolts
CAGE: 55974 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS FORMER TEST SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
head_styleKNURLED NO. 1
head_height0.250 INCHES NOMINAL IN
thread_class3A A
head_diameter1.000 INCHES NOMINAL IN
thread_length0.875 INCHES MINIMUM IN
thread_seriesUNIFIED NATIONAL COARSE (UNC) COUNTERBORE
fastener_length1.000 INCHES NOMINAL IN
style_designatorCOUNTERBORE THREADED
thread_directionRIGHT-HAND
threads_per_inch20 COUNTERBORE
surface_treatmentPASSIVATE OVERALL
NSN5306-00-415-7854
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2144559 · 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: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.000 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
INTERNAL THREAD LENGTH: 0.156 INCHES NOMINAL COUNTERBORE IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC) COUNTERBORE
•
THREAD LENGTH: 0.875 INCHES MINIMUM IN
•
THREADS PER INCH: 20 COUNTERBORE
•
STYLE DESIGNATOR: COUNTERBORE THREADED
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH1.000 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
INTERNAL THREAD LENGTH0.156 INCHES NOMINAL COUNTERBORE IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC) COUNTERBORE
THREAD LENGTH0.875 INCHES MINIMUM IN
THREADS PER INCH20 COUNTERBORE
STYLE DESIGNATORCOUNTERBORE THREADED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
Ready to buy 2144559?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 2144559?
2144559 is a BOLT,INTERNALLY RELIEVED BODY.
What is the NSN for 2144559?
2144559 is cataloged in the U.S. Government catalog under NSN 5306-00-415-7854. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 2144559

✓ 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.