PennEngineering
PennEngineering
Corporate Headquarters – Danboro, PA
5190 Old Easton Rd.
Danboro, PA 18916
Phone: 215-766-8853
Toll-Free Phone: 1-800-237-4736 (U.S. only)
Email: info@pemnet.com
Website: www.pemnet.com
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  • Designed for high load applications. Countersunk feature allow fastener to be installed flush with sheet surface.
  • Both UNC and UNF threads available in No. 10 and larger thread sizes. Check for availability of other grip ranges and designs.
Countersunk Head
Countersunk Head Threaded Insert - Unified 2
Unit of Measure
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Part #

Thread Size

Grip Range

L ± .015

Fastening

Standard Material

Standard Finish

CAD

AENM25KB271 N/A 1/4-20 N/A .211 - .271 in N/A 1.125 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM25KB271 N/A 1/4-20 N/A .211 - .271 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM25KB331 N/A 1/4-20 N/A .271 - .331 in N/A 1.187 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM25KB331 N/A 1/4-20 N/A .271 - .331 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM25KB391 N/A 1/4-20 N/A .331 - .391 in N/A 1.25 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM25KB391 N/A 1/4-20 N/A .331 - .391 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM25KB451 N/A 1/4-20 N/A .391 - .451 in N/A 1.312 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM25KB451 N/A 1/4-20 N/A .391 - .451 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB181 N/A 5/16-18 N/A .106 - .181 in N/A 1.218 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB181 N/A 5/16-18 N/A .106 - .181 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB256 N/A 5/16-18 N/A .181 - .256 in N/A 1.312 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB256 N/A 5/16-18 N/A .181 - .256 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB331 N/A 5/16-18 N/A .256 - .331 in N/A 1.406 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB331 N/A 5/16-18 N/A .256 - .331 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB406 N/A 5/16-18 N/A .331 - .406 in N/A 1.468 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB406 N/A 5/16-18 N/A .331 - .406 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB481 N/A 5/16-18 N/A .406 - .481 in N/A 1.562 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB481 N/A 5/16-18 N/A .406 - .481 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB556 N/A 5/16-18 N/A .481 - .556 in N/A 1.625 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM31KB556 N/A 5/16-18 N/A .481 - .556 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM37KB211 N/A 3/8-16 N/A .125 - .211 in N/A 1.375 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM37KB211 N/A 3/8-16 N/A .125 - .211 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM37KB296 N/A 3/8-16 N/A .211 - .296 in N/A 1.468 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM37KB296 N/A 3/8-16 N/A .211 - .296 in N/A N/A Installed N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
AENM37KB381 N/A 3/8-16 N/A .296 - .381 in N/A 1.562 in N/A Uninstalled N/A 300 Series Stainless Steel N/A Passivated and/or tested per ASTM A380 N/A CAD Icon (for items table)
Unit of Measure
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