PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 49448-9
49448-9 ✓ 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 RETAINER,SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DOUBLE HEXAGON W/HOLE, grip_length: 1.880 INCHES MINIMUM AND 1.900 INCHES MAXIMUM IN, head_height: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-943-2413, 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
49448-9
NSN: 5306-00-943-2413
FSC: 5306
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDOUBLE HEXAGON W/HOLE
grip_length1.880 INCHES MINIMUM AND 1.900 INCHES MAXIMUM IN
head_height0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_class3A A
thread_length0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES GRIP
fastener_length2.350 INCHES MINIMUM AND 2.370 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
NSN5306-00-943-2413
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 49448-9 · 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: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
SURFACE FINISH: 32.0 MICROINCHES THREADS
•
THREAD QUANTITY PER INCH: 24
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
FEATURES PROVIDED: FINISHED HEAD
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
THREAD LENGTH0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
SURFACE FINISH32.0 MICROINCHES THREADS
THREAD QUANTITY PER INCH24
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
FEATURES PROVIDEDFINISHED HEAD
THREAD CLASS3A A
HEAD STYLEDOUBLE HEXAGON W/HOLE
FASTENER LENGTH2.350 INCHES MINIMUM AND 2.370 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
49448-9 DW/SHEET 1Interchangeable
interchangeable cross-reference
interchangeable
32114Interchangeable
interchangeable cross-reference
interchangeable
49448-9 REV 13 ITEM 3Interchangeable
interchangeable cross-reference
interchangeable
55460Interchangeable
interchangeable cross-reference
interchangeable
49448-9 REV 13 ITEM 15Interchangeable
interchangeable cross-reference
interchangeable
49448-9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 49448-9?
49448-9 is a RETAINER,SEAT,VALVE.
What parts can replace 49448-9?
There are 6 known substitutes for 49448-9: 49448-9 DW/SHEET 1, 32114, 49448-9 REV 13 ITEM 3 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 49448-9?
49448-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-943-2413. 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