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PartsTable / COMPONENT / 3070AS549-4
3070AS549-4 ✓ 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

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.103 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.260 INCHES NOMINAL IN, thread_length: 0.500 INCHES NOMINAL IN, screw_material: STEEL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-145-8531, 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
3070AS549-4
NSN: 5305-01-145-8531
FSC: 5305
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
head_styleROUND
head_height0.103 INCHES NOMINAL IN
thread_class2A A
head_diameter0.260 INCHES NOMINAL IN
thread_length0.500 INCHES NOMINAL IN
screw_materialSTEEL
fastener_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentNICKEL
thread_quantity_per_inch32
NSN5305-01-145-8531
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3070AS549-4 · 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
•
SCREW MATERIAL: STEEL
•
THREAD QUANTITY PER INCH: 32
•
INTERNAL DRIVE STYLE: SLOT
•
HEAD STYLE: ROUND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD CLASS: 2A A
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.260 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SCREW MATERIALSTEEL
THREAD QUANTITY PER INCH32
INTERNAL DRIVE STYLESLOT
HEAD STYLEROUND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD CLASS2A A
THREAD LENGTH0.500 INCHES NOMINAL IN
HEAD DIAMETER0.260 INCHES NOMINAL IN
HEAD HEIGHT0.103 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
31124Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 41Interchangeable
interchangeable cross-reference
interchangeable
C41615Interchangeable
interchangeable cross-reference
interchangeable
41615Interchangeable
interchangeable cross-reference
interchangeable
L104Interchangeable
interchangeable cross-reference
interchangeable
6236031124Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3070AS549-4?
3070AS549-4 is a SCREW,MACHINE.
What parts can replace 3070AS549-4?
There are 13 known substitutes for 3070AS549-4: 31124, B94.19 TABLE 41, C41615 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3070AS549-4?
3070AS549-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-145-8531. 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