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4901-81 — TEE,PIPE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4901-81: TEE,PIPE.

The TEE,PIPE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, thread_length: 1.00 INCHES NOMINAL IN, fastener_length: 2.00 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, surface_treatment: ZINC OVERALL, width_between_flats: 0.56 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-943-5662, 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
4901-81
NSN: 5305-00-943-5662
NIINs: 009435662, 012421277, 017257741
FSC: 5305 — Screws
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
head_styleHEXAGON
thread_length1.00 INCHES NOMINAL IN
fastener_length2.00 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats0.56 INCHES NOMINAL IN
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch24
thread_series_designatorUNF
part_name_assigned_by_controlling_agencyHEX HEAD CAP SCREW
NSN5305-00-943-5662
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4901-81 · 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 SURFACE TREATMENT: CADMIUM
•
FASTENER LENGTH: 0.948 INCHES NOMINAL IN
•
THREAD LENGTH: 0.795 INCHES MINIMUM IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
SCREW MATERIAL: STEEL COMP 8740
TECHNICAL CHARACTERISTICS
SCREW SURFACE TREATMENTCADMIUM
FASTENER LENGTH0.948 INCHES NOMINAL IN
THREAD LENGTH0.795 INCHES MINIMUM IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SCREW MATERIALSTEEL COMP 8740
INTERNAL DRIVE STYLESLOT
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
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 4901-81?
4901-81 is a TEE,PIPE.
What is the NSN for 4901-81?
4901-81 is cataloged in the U.S. Government catalog under NSN 5305-00-943-5662. This indicates validated use in U.S. government and defense supply chains.
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