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Technical Data Sheet

8186861 — 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: BINDING, head_height: 0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.275 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN, thread_length: 0.250 INCHES MAXIMUM IN, screw_material: STEEL. This part is cataloged in the Federal Logistics Information System under NSN 5305-00-408-0129, 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
8186861
NSN: 5305-00-408-0129
FSC: 5305
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
head_styleBINDING
head_height0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.275 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
thread_length0.250 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.250 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE
thread_quantity_per_inch32
NSN5305-00-408-0129
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 8186861 · 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: 0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.250 INCHES NOMINAL IN
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
HEAD DIAMETER: 0.275 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD STYLE: BINDING
•
THREAD CLASS: 2A A
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.071 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
FASTENER LENGTH0.250 INCHES NOMINAL IN
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
HEAD DIAMETER0.275 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
HEAD STYLEBINDING
THREAD CLASS2A A
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD LENGTH0.250 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
9993-060InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
060InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MILR15109AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-DTL-15109InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1831-52InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
211504InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8186861?
8186861 is a SCREW,MACHINE.
What parts can replace 8186861?
There are 20 known substitutes for 8186861: 9993-060, 060, MILR15109A and 17 more. Substitute compatibility should be verified for your specific system.
Is 8186861 still available?
8186861 is currently cancelled.
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