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Technical Data Sheet

639122-350 — Technical Data Sheet

✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, thread_length: 0.562 INCHES MAXIMUM IN, screw_material: STEEL CORROSION RESISTING.

This part is cataloged in the Federal Logistics Information System under NSN 5305-00-411-0683, 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
639122-350
NSN: 5305-00-411-0683
FSC: 5305
CAGE: 57057 — NAVCOM DEFENSE ELECTRONICS, INC. (USA)
SPECIFICATIONS
head_stylePAN NO. 2
head_height0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
thread_length0.562 INCHES MAXIMUM IN
screw_materialSTEEL CORROSION RESISTING
fastener_length0.562 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentPASSIVATE
thread_quantity_per_inch32
NSN5305-00-411-0683
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 639122-350 · 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
•
THREAD CLASS: 2A A
•
HEAD STYLE: PAN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 1ST MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD 2ND MATERIAL RESPONSE
•
HEAD HEIGHT: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.469 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
•
MINIMUM TENSILE STRENGTH: 80000 POUNDS PER SQUARE INCH LBS
•
SCREW SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS
THREAD CLASS2A A
HEAD STYLEPAN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,300 SERIES FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 1ST MATERIAL RESPONSE OR COMP 16-18 OR 18-8 ASSN STD 2ND MATERIAL RESPONSE
HEAD HEIGHT0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
THREAD LENGTH0.469 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
MINIMUM TENSILE STRENGTH80000 POUNDS PER SQUARE INCH LBS
SCREW SURFACE TREATMENTPASSIVATE
THREAD QUANTITY PER INCH32
NOMINAL THREAD DIAMETER0.138 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
70A3810420-480InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
915012-0018InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
4&40UNC5&8CRESInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
364MR006P009InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1185-3CN380InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1185-3CNX3-8InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 639122-350?
639122-350 is a SCREW,MACHINE.
What parts can replace 639122-350?
There are 23 known substitutes for 639122-350: 70A3810420-480, 915012-0018, 4&40UNC5&8CRES and 20 more. Substitute compatibility should be verified for your specific system.
Is 639122-350 still available?
639122-350 is currently cancelled.
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