Nuts

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Plain nuts usually fix in place with spring or shakeproof washers. There are however some special nut types designed to more securely lock in place. Thin nuts may be used if space is available for a second nut to lock the primary fixing nut. Self-locking ‘stiff nut’ types include the Nyloc (with nylon insert, the most common stiff nut, not for high temperatures), Aerotight and Philidas (all metal, with a deformed, split outer thread portion and higher temperature enduring) and Cleveloc (all metal, with a deformed, squashed outer thread portion). Slotted nuts are secured with a split pin. Note that a few sizes of nut use different spanner sizes to their equivalent bolt or set screw.

         
Plain UNC Nuts
Part No Dia Thread Finish Spanner
CNZ102 0.138" (No 6) UNC Zinc 1/4 AF
         
Plain UNF Nuts
Part No Dia Thread Finish Spanner
FNZ103 0.190" (No 10) UNF Zinc 5/16 AF
ANZ103 0.190" (No 10) UNF Zinc 3/8 AF
FNZ104 1/4" UNF Zinc 7/16 AF
FNZ105 5/16" UNF Zinc 1/2 AF
NH605040 5/16" UNF Natural 1/2 AF
FNZ106 3/8" UNF Zinc 9/16 AF
GHF203 7/16" UNF Zinc 11/16 AF
FNZ108 1/2" UNF Zinc 3/4 AF
         
Plain UNF High Tensile Nuts
Part No Dia Thread Finish Spanner
FNZ504 1/4" UNF Zinc 7/16 AF
FNZ505 5/16" UNF Zinc 1/2 AF
FNZ506 3/8" UNF Zinc 9/16 AF
FNZ507 7/16" UNF Zinc 11/16 AF
FNZ508 1/2" UNF Zinc 3/4 AF
         
Plain BA Nuts
Part No Dia Thread Finish Spanner
AJD8012Z 0.1850" (2 BA) BA Zinc 2 BA or 3/16 BSF
         
Plain BSF Nuts
Part No Dia Thread Finish Spanner
AJD8104Z 1/4" BSF Zinc 1/4 BSF
         
Plain Metric Fine Nuts
Part No Dia Thread Finish Spanner
NH103041 3mm (M3) Metric Fine Zinc 5.5mm
GHF211 4mm (M4) Metric Fine Zinc 7mm
NH105041 5mm (M5) Metric Fine Zinc 8mm
NH106041 6mm (M6) Metric Fine Zinc 10mm
GHF213 8mm (M8) Metric Fine Zinc 13mm
         
Flanged Metric Fine Nuts
Part No Dia Thread Finish Spanner
FN105041 5mm (M5) Metric Fine Zinc 8mm
FN105045 5mm (M5) Metric Fine Black 8mm
FN106041 6mm (M6) Metric Fine Zinc 10mm
FN106045 6mm (M6) Metric Fine Black 10mm
FN106047 6mm (M6) Metric Fine Zinc 10mm
FN108041 8mm (M8) Metric Fine Zinc 13mm
         
Thin UNC Nuts
Part No Dia Thread Finish Spanner
53K1722 5/16" UNC Zinc 1/2 AF
         
Thin UNF Nuts
Part No Dia Thread Finish Spanner
NT604041 1/4" UNF Zinc 7/16 AF
NT605041 5/16" UNF Zinc 1/2 AF
NT606041 3/8" UNF Zinc 9/16 AF
FNZ207 7/16" UNF Zinc 11/16 AF
NT610041 5/8" UNF Zinc 15/16 AF
         
Thin UNF High Tensile Nuts
Part No Dia Thread Finish Spanner
FNZ604 1/4" UNF Zinc 7/16 AF
51K1178 5/16" UNF Natural 1/2 AF
         
Brass UNF Nuts
Part No Dia Thread Finish Spanner
GHF261 5/16" UNF 3/8" thick 1/2 AF
51K1177 5/16" UNF 3/4" thick 1/2 AF
         
Nyloc UNF Stiff Nuts
Part No Dia Thread Finish Spanner
53K1420 0.190" (No 10) UNF Zinc 5/16 AF
GHF221 1/4" UNF Zinc 7/16 AF
GHF222 5/16" UNF Zinc 1/2 AF
GHF223 3/8" UNF Zinc 9/16 AF
GHF224 7/16" UNF Zinc 11/16 AF
GHF225 1/2" UNF Zinc 3/4 AF
         
Nyloc Metric Fine Stiff Nuts
Part No Dia Thread Finish Spanner
GHF231 6mm (M6) Metric Fine Zinc 10mm
NY108041 8mm (M8) Metric Fine Zinc 13mm
NY210047 10mm (M10) Metric Fine Zinc 17mm
         
Aerotight UNC Stiff Nuts
Part No Dia Thread Finish Spanner
LNZ102 0.138" (No 6) UNC Zinc 5/16 AF
         
Aerotight UNF Stiff Nuts
Part No Dia Thread Finish Spanner
LNZ105 5/16" UNF Zinc 1/2 AF
LNZ106 3/8" UNF Zinc 9/16 AF
         
Philidas UNF Stiff Nuts
Part No Dia Thread Finish Spanner
LNZ405 5/16" UNF Zinc 1/2 AF
         
Cleveloc UNF Stiff Nuts
Part No Dia Thread Finish Spanner
NV604041 1/4" UNF Zinc 7/16 AF
LNZ505 5/16" UNF Zinc 1/2 AF
LNZ508 1/2" UNF Zinc 3/4 AF
         
Cleveloc Metric Fine Stiff Nuts
Part No Dia Thread Finish Spanner
NV105041 5mm (M5) Metric Fine Zinc 8mm
NV106041 6mm (M6) Metric Fine Zinc 10mm
NV110041 10mm (M10) Metric Fine Zinc 17mm
         
Slotted UNF Nuts
Part No Dia Thread Finish Spanner
NL610041 5/8" UNF (RHT) Zinc 15/16 AF
FNN2410 5/8" UNF (LHT) Zinc 15/16 AF
         
Flanged Metric Fine Self Locking Nuts
Part No Dia Thread Finish Spanner
FX108047 8mm (M8) Metric Fine Zinc 13mm
FX110041 10mm (M10) Metric Fine Zinc 17mm

 

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