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320-4-45544-1 — BOLT,INTERNAL WRENCHING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

320-4-45544-1: BOLT,INTERNAL WRENCHING.

The BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, head_style: FLAT CHAMFER, head_height: 0.250 INCHES NOMINAL IN, thread_class: 2A A, chamfer_angle: 30.0 DEGREES NOMINAL, head_diameter: 3.400 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-185-2836, 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
320-4-45544-1
NSN: 5306-01-185-2836
FSC: 5306 — Bolts
CAGE: 56221 — AXILLON AEROSPACE (ROCKMART), LLC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
head_styleFLAT CHAMFER
head_height0.250 INCHES NOMINAL IN
thread_class2A A
chamfer_angle30.0 DEGREES NOMINAL
head_diameter3.400 INCHES NOMINAL IN
thread_length0.710 INCHES NOMINAL IN
fastener_length2.340 INCHES NOMINAL IN
thread_directionRIGHT-HAND
nominal_thread_diameter2.500 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUN
NSN5306-01-185-2836
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 320-4-45544-1 · 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: 2.340 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLE CENTERS: 2.780 INCHES NOMINAL IN
•
THREAD LENGTH: 0.710 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 2.500 INCHES IN
•
HEAD STYLE: FLAT CHAMFER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH2.340 INCHES NOMINAL IN
DISTANCE BETWEEN HOLE CENTERS2.780 INCHES NOMINAL IN
THREAD LENGTH0.710 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER2.500 INCHES IN
HEAD STYLEFLAT CHAMFER
THREAD DIRECTIONRIGHT-HAND
CHAMFER ANGLE30.0 DEGREES NOMINAL
THREAD CLASS2A A
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 320-4-45544-1?
320-4-45544-1 is a BOLT,INTERNAL WRENCHING.
What is the NSN for 320-4-45544-1?
320-4-45544-1 is cataloged in the U.S. Government catalog under NSN 5306-01-185-2836. 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.