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Technical Data Sheet
PartsTable / COMPONENT / X911
X911 ✓ 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

ISOLATOR,RADIO FREQUENCY REFLECT. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, flange_type: COVER, head_height: 0.156 INCHES NOMINAL IN, thread_class: 2A A, overall_width: 1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-275-4167, 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
X911
NSN: 5306-00-275-4167
FSC: 5306
CAGE: 77260 — PIERCE CO INC THE SUB OF AVIS INDUSTRIAL CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
flange_typeCOVER
head_height0.156 INCHES NOMINAL IN
thread_class2A A
overall_width1.615 INCHES MINIMUM AND 1.635 INCHES MAXIMUM IN
thread_length1.000 INCHES MAXIMUM IN
overall_height0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
overall_length1.925 INCHES MINIMUM IN
fastener_length1.000 INCHES NOMINAL IN
flange_quantity1
special_featuresVSWR 1.25; INSERTION LOSS 0.50 DB MAX; ISOLATION 18.0 DB MIN; POWER RATING 5.0 W AVG,5000.0 W PEAK; ALUMINUM; CHEMICAL FILM,PRIMER AND PAINT W
NSN5306-00-275-4167
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: X911 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
FEATURES PROVIDED: UNFINISHED HEAD
•
THREAD QUANTITY PER INCH: 24
•
HEAD STYLE: HEXAGON
•
HEAD HEIGHT: 0.156 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.000 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.216 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
THREAD DIRECTIONRIGHT-HAND
FEATURES PROVIDEDUNFINISHED HEAD
THREAD QUANTITY PER INCH24
HEAD STYLEHEXAGON
HEAD HEIGHT0.156 INCHES NOMINAL IN
FASTENER LENGTH1.000 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.216 INCHES IN
THREAD LENGTH1.000 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
X9.11Interchangeable
interchangeable cross-reference
interchangeable
G300391-1Interchangeable
interchangeable cross-reference
interchangeable
XM360Interchangeable
interchangeable cross-reference
interchangeable
X911-2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X911?
X911 is a ISOLATOR,RADIO FREQUENCY REFLECT.
What parts can replace X911?
There are 4 known substitutes for X911: X9.11, G300391-1, XM360 and 1 more. Substitute compatibility should be verified for your specific system.
Is X911 still available?
X911 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026