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28121-1 — LINE,RADIO FREQUENCY TRANSMISSIO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

28121-1: LINE,RADIO FREQUENCY TRANSMISSIO.

LINE,RADIO FREQUENCY TRANSMISSIO. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 0.645 INCHES NOMINAL IN, outside_diameter: 0.765 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.030 INCHES NOMINAL IN, accommodated_conductor_type: COAXIAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-094-9259, 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
28121-1
NSN: 5310-00-094-9259
NIINs: 000949259, 012605530, 013146584, 013782639
FSC: 5310 — Nuts and Washers
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter0.645 INCHES NOMINAL IN
outside_diameter0.765 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.030 INCHES NOMINAL IN
external_key_quantity6
internal_key_quantity1
accommodated_conductor_typeCOAXIAL
external_straight_key_width0.438 INCHES NOMINAL IN
internal_straight_key_width0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
overall_distance_including_keys1.290 INCHES NOMINAL IN
material_document_and_classificationAMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-094-9259
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 28121-1 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INTERNAL STRAIGHT KEY WIDTH: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.270 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 1.290 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.765 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.030 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.270 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS1.290 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.765 INCHES NOMINAL IN
MATERIAL THICKNESS0.030 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.438 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY6
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 28121-1?
28121-1 is a LINE,RADIO FREQUENCY TRANSMISSIO.
What is the NSN for 28121-1?
28121-1 is cataloged in the U.S. Government catalog under NSN 5310-00-094-9259. This indicates validated use in U.S. government and defense supply chains.
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