R-193 B-7 4140 High Strength Anchor Bolts

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Material Specifications

All bolts machined from high strength chromium molybdenum alloy steel (AISI 4140 typically) with a minimum tensile strength of 125,000 PSI and rolled threads – all of the above per ASTM A193
2h heavy hex nut per ASTM 194

8 TPI per ASTM A193
Top section design length allows for 12 times the bolt diameter in free stretch
Top section heat treated per ASTM A193, GR B-7
Frangible section shaped per ASTM A370
Shot peened per mil spec S-13165-B amendment 2
Self-aligning double spherical washer made from 4140, through hardened to the requirements of ASTM F-436
Plastic grout sleeve provided
Class 2B fit extra long coupling heat treated to ROCKWELL C 24-29
Coupling thread engagement (top and bottom sections) is 2” minimum for 1.25” to 2” diameter bolts – top section will have additional ± .5” engagement to allow for top section elevation adjustment
2h heavy hex coupling lock nut
Coupling and coupling lock nut will have a thread adhesive applied before tightening
Bottom section is B7 all thread – design length per ACI 439
Bottom plate, if used, secured with a 2h nut threads below 2h nut are deformed or spot welded to prevent loosening

Extra 2h nut provided that can be welded to rebar cage to secure bolt location/elevation

All bolts checked with a calibrated ring gage
All couplings checked with a calibrated go/no go gages for a class 2B fit
All threads visually inspected for delamination from rolling process
All bolts and couplings will have a stamped serial number – traceable back to original mill run of the bar stock. mtr’s kept for all bolts.
All threads inspected for burrs or deformations to ensure that nuts are free turning – all burrs removed before shot peening operation
All bolts will be protected with a polynet webbing to protect the threads during shipping
All bolts will be protected from corrosion with an anti-rust lubricant that meets ASTM D-1735-62 and ASTM B-117-73
Bottom nut or plate, if used, lock nut thread deformation or spot weld checked to ensure the nut cannot loosen
All grease will be removed from the bolt and coupling in the area where the tread adhesive is to be applied

± 5% repeatable accuracy
Withstand 1500 hrs of continuous salt spray
The load setting for all bolts is checked by a hydraulic tensioner to ensure the load setting is accurate
Load indicator does not require visual inspection to determine anchor bolt torque
Gage pin made from 12.9 carbon steel to BS 3692
Withstand operating temperatures of 350°F or 180°C
Special order high temperatures (up to 1100°F or 600°C) applications
Anhydrous high melt calcium base grease to MILG- 10924C and NATO G403 as corrosion protection

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