Sherex Fastening Solutions, LLC
Sherex Fastening Solutions, LLC.
400 Riverwalk Pkwy, Suite 600
Tonawanda, NY 14150
Toll Free: 866.474.3739
Tel: 716.875.0315
Fax: 716.875.0358
Email: info@sherex.com
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Part numbers listed below reflect steel, open-end, non-keyed, with cadmium yellow plating. Contact Sherex for additional configurations, platings, and materials.
NAS Rivet Nuts_Group
Unit of Measure
1 2 

Item #

NAS Part Number

Thread Size

Grip Range
(Min. - Max.)

Identifying Mark

Install Hole Size
Min. - Max.

P
+.003/-.000

SXS25-211CY N/A N/A N/A N/A N/A N/A
SXS25-271CY N/A NAS1330S4E-271 N/A 1/4-20 UNC-3B N/A .211 - .271 N/A 2 RAD N/A .332 - .338 N/A 0.062
SXS25-331CY N/A NAS1330S4E-331 N/A 1/4-20 UNC-3B N/A .271 - .331 N/A 3 RAD N/A .332 - .338 N/A 0.062
SXS25-391CY N/A NAS1330S4E-391 N/A 1/4-20 UNC-3B N/A .331 - .391 N/A 4 RAD N/A .332 - .338 N/A 0.062
SXS25-451CY N/A NAS1330S4E-451 N/A 1/4-20 UNC-3B N/A .391 - .451 N/A 5 RAD N/A .332 - .338 N/A 0.062
SXS31-181CY N/A NAS1330S5E-181 N/A 5/16-18 UNC-3B N/A .106 - .181 N/A BLANK N/A .413 - .423 N/A 0.128
SXS31-256CY N/A NAS1330S5E-256 N/A 5/16-18 UNC-3B N/A .181 - .256 N/A 1 RAD N/A .413 - .423 N/A 0.128
SXS31-331CY N/A NAS1330S5E-331 N/A 5/16-18 UNC-3B N/A .256 - .331 N/A 2 RAD N/A .413 - .423 N/A 0.128
SXS31-406CY N/A NAS1330S5E-406 N/A 5/16-18 UNC-3B N/A .331 - .406 N/A 3 RAD N/A .413 - .423 N/A 0.128
SXS31-481CY N/A NAS1330S5E-481 N/A 5/16-18 UNC-3B N/A .406 - .481 N/A 4 RAD N/A .413 - .423 N/A 0.128
SXS31-556CY N/A NAS1330S5E-556 N/A 5/16-18 UNC-3B N/A .481 - .556 N/A 5 RAD N/A .413 - .423 N/A 0.128
SXS37-211CY N/A NAS1330S6E-211 N/A 3/8-16 UNC-3B N/A .125 - .211 N/A BLANK N/A .490 - .500 N/A 0.128
SXS37-296CY N/A NAS1330S6E-296 N/A 3/8-16 UNC-3B N/A .211 - .296 N/A 1 RAD N/A .490 - .500 N/A 0.128
SXS37-381CY N/A NAS1330S6E-381 N/A 3/8-16 UNC-3B N/A .296 - .381 N/A 2 RAD N/A .490 - .500 N/A 0.128
SXS37-466CY N/A NAS1330S6E-466 N/A 3/8-16 UNC-3B N/A .381 - .466 N/A 3 RAD N/A .490 - .500 N/A 0.128
SXS37-551CY N/A NAS1330S6E-551 N/A 3/8-16 UNC-3B N/A .466 - .551 N/A 4 RAD N/A .490 - .500 N/A 0.128
SXS37-636CY N/A NAS1330S6E-636 N/A 3/8-16 UNC-3B N/A .551 - .636 N/A 5 RAD N/A .490 - .500 N/A 0.128
SXS50-226CY N/A NAS1330S8E-226 N/A 1/2-13 UNC-3B N/A .125 - .226 N/A BLANK N/A .625 - .733 N/A 0.128
SXS50-326CY N/A NAS1330S8E-326 N/A 1/2-13 UNC-3B N/A .226 - .326 N/A 1 RAD N/A .625 - .635 N/A 0.128
SXS50-426CY N/A NAS1330S8E-426 N/A 3/8-16 UNC-3B N/A .326 - .426 N/A 2 RAD N/A .625 - .635 N/A 0.128
SXS50-526CY N/A NAS1330S8E-526 N/A 1/2-13 UNC-3B N/A .426 - .526 N/A 3 RAD N/A .625 - .635 N/A 0.128
Unit of Measure
1 2