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Technical Data Sheet
PartsTable / MRO / A2044
A2044 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 A2044 is a the manufacturer industrial component. Key specifications include material: STEEL, end_style: VERTEX OUTSIDE PERIPHERY, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 3.500 INCHES NOMINAL IN, major_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-281-6648, 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
MRO→ MRO_GENERAL→ A2044
NSN: 5325-00-281-6648
FSC: 5325
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialSTEEL
end_styleVERTEX OUTSIDE PERIPHERY
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter3.500 INCHES NOMINAL IN
major_thickness0.125 INCHES NOMINAL IN
outside_diameter3.875 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-281-6648
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A2044 · 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
•
MAJOR THICKNESS: 0.125 INCHES NOMINAL IN
•
INSIDE DIAMETER: 3.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
END STYLE: VERTEX OUTSIDE PERIPHERY
•
RING STYLE: STRAIGHT GAP
•
OUTSIDE DIAMETER: 3.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MAJOR THICKNESS0.125 INCHES NOMINAL IN
INSIDE DIAMETER3.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
END STYLEVERTEX OUTSIDE PERIPHERY
RING STYLESTRAIGHT GAP
OUTSIDE DIAMETER3.875 INCHES NOMINAL IN
USAGE DESIGNEXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
21418Interchangeable
interchangeable cross-reference
interchangeable
H-B-771 TY2CL1Interchangeable
interchangeable cross-reference
interchangeable
A-A-2513Interchangeable
interchangeable cross-reference
interchangeable
A2044Interchangeable
interchangeable cross-reference
interchangeable
BP1905Interchangeable
interchangeable cross-reference
interchangeable
1019865-031Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A2044?
A2044 is a A2044. It is classified as a MRO (MRO_GENERAL).
What parts can replace A2044?
There are 7 known substitutes for A2044: 21418, H-B-771 TY2CL1, A-A-2513 and 4 more. Substitute compatibility should be verified for your specific system.
Is A2044 still available?
A2044 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026