PartsTable
Technical Data Sheet
SK138099 ✓ 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,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.207 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN, thread_length: 0.120 INCHES MINIMUM IN, fastener_length: 0.305 INCHES NOMINAL 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 5305-00-369-2445, 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
SK138099
NSN: 5305-00-369-2445
FSC: 5305
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.207 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
thread_length0.120 INCHES MINIMUM IN
fastener_length0.305 INCHES NOMINAL IN
special_featuresPELLET TYPE LOCKING FEATURE IN THREAD
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatmentPASSIVATE OVERALL
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.112 INCHES IN
NSN5305-00-369-2445
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SK138099 · 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 QUANTITY PER INCH: 40
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
COUNTERSINK ANGLE: 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER: 0.137 INCHES NOMINAL IN
THREAD DIRECTION: RIGHT-HAND
NOMINAL THREAD DIAMETER: 0.112 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH40
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.137 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESPELLET TYPE LOCKING FEATURE IN THREAD
NOMINAL THREAD DIAMETER0.112 INCHES IN
FIRST DIAMETER FROM HEAD0.080 INCHES NOMINAL IN
FASTENER LENGTH0.305 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
P140775-1PC103Interchangeable
interchangeable cross-reference
interchangeable
455290SK0Interchangeable
interchangeable cross-reference
interchangeable
2H3853Interchangeable
interchangeable cross-reference
interchangeable
12NBL2830YJ2CInterchangeable
interchangeable cross-reference
interchangeable
12NBL2830YJANG25Interchangeable
interchangeable cross-reference
interchangeable
24466-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SK138099?
SK138099 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace SK138099?
There are 18 known substitutes for SK138099: P140775-1PC103, 455290SK0, 2H3853 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SK138099?
SK138099 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-369-2445. This indicates validated use in U.S. government and defense supply chains.
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