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U3158 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

U3158: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FILLISTER, head_height: 0.250 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN, thread_length: 0.625 INCHES MINIMUM IN, fastener_length: 1.812 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-207-7929, 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
U3158
NSN: 5305-00-207-7929
FSC: 5305 — Screws
CAGE: 78943 — TRIUMPH THERMAL SYSTEMS, LLC (USA)
SPECIFICATIONS
head_styleFILLISTER
head_height0.250 INCHES NOMINAL IN
thread_class3A A
head_diameter0.401 INCHES MINIMUM AND 0.411 INCHES MAXIMUM IN
thread_length0.625 INCHES MINIMUM IN
fastener_length1.812 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.250 INCHES IN
screw_surface_treatmentCADMIUM
minimum_tensile_strength75000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch28
NSN5305-00-207-7929
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: U3158 · 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
•
SCREW SURFACE TREATMENT: CADMIUM
•
FASTENER LENGTH: 1.812 INCHES NOMINAL IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE
•
THREAD LENGTH: 0.625 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FILLISTER
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.250 INCHES NOMINAL IN
SCREW SURFACE TREATMENTCADMIUM
FASTENER LENGTH1.812 INCHES NOMINAL IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE
THREAD LENGTH0.625 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFILLISTER
THREAD DIRECTIONRIGHT-HAND
MINIMUM TENSILE STRENGTH75000 POUNDS PER SQUARE INCH LBS
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is U3158?
U3158 is a SCREW,MACHINE.
What is the NSN for U3158?
U3158 is cataloged in the U.S. Government catalog under NSN 5305-00-207-7929. This indicates validated use in U.S. government and defense supply chains.
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