Optical Element Retaining Ring

NSN: 1240-00-159-0537 | Model: 655045

A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see retainer, optical element. Excludes cell, optical element; nut, plain knurled; nut, plain round; and ring, retaining.

NSN Properties and Flags

NATO Stock Number

1240-00-159-0537

DEMIL

Groove Diameter

2.251 inches

Overall Length

0.656 inches

Outside Diameter

2.500 inches

Aperture Diameter

2.016 inches

Inner Groove Width

0.0235 inches

End Application

Gun sight mk29

Internal Flange Thickness

0.125 inches

Groove Location

Inside face of flange

Knurled Periphery

Not provided

Material

Steel, corrosion resisting

Material

Stainless steel

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 1240-00-159-0537 Datasheet

Supply Class (FSC):

Optical Sighting And Ranging Equipment

Cross Reference:

655045
231650

Cage Codes:

Navair and Navsea Managed (CAGE 10001)
Lockheed Martin Corporation (CAGE 56232)

Schedule B & Trade:

Schedule B: 9803200000 (NAICS 990000)

Military equipments not identified by kind
SITC: 93100

Special transactions and commodities not classified according to kind
End Use: 50060

Military apparel and footwear

Identification:

HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

A - Item does not contain precious metal.

ADPE

- Represents items with no adp components

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

NSN Management Codes:

SOS
S9e
AAC
V
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
9n-----
Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $75.61 to $126.02..
Does NSN 1240-00-159-0537 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Spain, Thailand, and Turkey
What is the NIIN of NSN 1240-00-159-0537?
001590537 or 00-159-0537
Does NSN 1240-00-159-0537 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 1240-00-159-0537?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963