N57C Bostitch Nailer - Overview

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WASHER-RUBBER-7 – Part Number: 854004
$7.44
In Stock
WASHER-RUBBER-7
Part #854004
This rubber replacement seal is designed for use with select pneumatic and coil-fed nailers, providing a tight and reliable seal at the nose of the tool. Its primary function is to prevent air leakage during operation, helping to maintain consistent pressure and performance. Over time, seals can wear down or become damaged, which may lead to reduced efficiency or tool malfunction. This part is sold individually and is ideal for routine maintenance or repair. Replacing a worn nose seal can help extend the life of your tool and ensure smooth, dependable operation.
Label,bostitch – Part Number: 113220
No Longer Available
Label,bostitch
Part #113220
This is an authentic Bostitch replacement part that has been sourced from the original manufacturer to be used with pneumatic nailers. The adhesive label attaches to the body of the nailer to identify the brand of the tool. Adding a label to a used or refurbished nailer can improve the look of the nailer. This item is available as an individual replacement part.
Grip,Handle – Part Number: 107490
No Longer Available
Grip,Handle
Part #107490
Assy,Canister Cover – Part Number: 105837
No Longer Available
Assy,Canister Cover
Part #105837
Collar,Spring – Part Number: N65045
No Longer Available
Collar,Spring
Part #N65045
SPACER – Part Number: 105973
$7.44
Special Order
SPACER
Part #105973
O-RING – Part Number: 850607
$14.09
In Stock
O-RING
Part #850607
This replacement seal is designed for use in a variety of pneumatic tools, including both nail guns and staplers. It serves a vital function by creating an airtight seal—most commonly installed on the piston in nail guns and on the cylinder in staplers. This helps maintain consistent air pressure and tool performance. Over time, seals can wear out, crack, or lose their elasticity, which may lead to reduced efficiency or air leaks. If your tool is underperforming, replacing worn seals like this one can help restore its functionality. This seal is sold individually and measures 1.484 inches in outer diameter with a thickness of 0.139 inches, ensuring a snug and reliable fit during installation.
C-RING – Part Number: 9R184453
$7.44
Special Order
C-RING
Part #9R184453
PIN-SPIROL – Part Number: MPP030012
$7.44
Special Order
PIN-SPIROL
Part #MPP030012
O-RING-.703X.103 – Part Number: 851554
$9.71
Special Order
O-RING-.703X.103
Part #851554
This o-ring is a high quality item designed for Bostitch nailers and staplers. It is an authentic part that is supplied directly from original equipment manufacturer. This o-ring is generally used to provide a seal for the trigger valve. Over time these rubber parts tend to shrink, become brittle and crack allowing for air leaks. Keep an eye on the tools performance and replace o-rings as needed to maintain optimum performance. Please note, one rubber o-ring is included per order. Replacing this item you will need hex key also known as an allen wrench.
KIT-CONTACT TRIP CON – Part Number: CNTK2
$41.96
Special Order
KIT-CONTACT TRIP CON
Part #CNTK2
COMPRESSION SPRING – Part Number: 854011
$7.44
Special Order
COMPRESSION SPRING
Part #854011
The metal compression spring is made of metal and goes between the check pawl and the door. This part is available as an individual replacement and is an OEM replacement part from the manufacturer Bostitch for use in nailers. Springs can lose their tension over time and will need to be replaced. A set of pliers and a socket set may be needed when replacing this spring.
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would not fire nails
10 of 15 people found this instruction helpful.
  • Richard from Bogalusa, LA
  • A Bit Difficult
  • 30 - 60 mins
  • Pliers, Screw drivers
remove 2 Philips head screws, drive out drift pins with drill bit. Remove TVA6 replace with new TVA6 making sure TVA6 is completely seated and slots are aligned with drift pin holes! Drive in drift pins. Replace trigger and screws.
This did not solve the problem as suggested by Parts select.
Replaced Head Valve Seal...Problem re solved
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