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ST3M505-3-16 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M505-3-16: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, thread_length: 0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-143-2829, 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
ST3M505-3-16
NSN: 5305-01-143-2829
FSC: 5305 — Screws
CAGE: 58998 — FASTENER INNOVATION TECHNOLOGY, INC. DBA F I T (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleFLAT COUNTERSUNK
thread_class3A A
head_diameter0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
thread_length0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.316 INCHES MINIMUM AND 1.346 INCHES MAXIMUM IN
shoulder_length0.923 INCHES MINIMUM AND 0.943 INCHES MAXIMUM FIRST SHOULDER IN
special_featuresINTERNAL HEXAGON SOCKET IN THREADED END 0.0791 IN. MIN AND 0.0806 IN. MAX WIDTH ACROSS FLATS IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
shoulder_diameter0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
NSN5305-01-143-2829
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M505-3-16 · 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
•
FASTENER LENGTH: 1.316 INCHES MINIMUM AND 1.346 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.923 INCHES MINIMUM AND 0.943 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.316 INCHES MINIMUM AND 1.346 INCHES MAXIMUM IN
SHOULDER LENGTH0.923 INCHES MINIMUM AND 0.943 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.306 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESINTERNAL HEXAGON SOCKET IN THREADED END 0.0791 IN. MIN AND 0.0806 IN. MAX WIDTH ACROSS FLATS IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
HT4009-3-16Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 ST3M505-3-16?
ST3M505-3-16 is a SCREW,SHOULDER.
What parts can replace ST3M505-3-16?
There is 1 known substitute for ST3M505-3-16: HT4009-3-16. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M505-3-16?
ST3M505-3-16 is cataloged in the U.S. Government catalog under NSN 5305-01-143-2829. This indicates validated use in U.S. government and defense supply chains.
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