We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
Image not available
BOSTITCHAir Tool Replacement Parts

BOSTITCH 166772 Spring Contact Arm

The BOSTITCH Spring Contact Arm (Mfr Part # 166772) is an air tool replacement part, specifically a Contact Arm Spring. This component is designed for use with BOSTITCH models 5KNH5 and F21PL2, serving as a direct…

SKU 3G-OTH-167170

Brand
BOSTITCH
Item
166772 Spring Contact Arm
Part Number
166772
Category
Air Tool Replacement Parts
Available to Order
Also known as:166772BOSTITCH
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

BOSTITCH
Manufacturer Part Number
166772

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

BOSTITCH Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BOSTITCH Spring Contact Arm (Mfr Part # 166772) is an air tool replacement part, specifically a Contact Arm Spring. This component is designed for use with BOSTITCH models 5KNH5 and F21PL2, serving as a direct replacement part for maintaining tool functionality.

Frequently Asked Questions

What is the BOSTITCH Spring Contact Arm used for?

The BOSTITCH Spring Contact Arm (part #166772) is a replacement component for pneumatic nailers and staplers. It provides the spring tension needed for the contact arm to properly engage the workpiece, ensuring consistent fastener depth and preventing misfires in models 5KNH5 and F21PL2.

What are the specifications of the BOSTITCH Spring Contact Arm?

The BOSTITCH Spring Contact Arm is identified by manufacturer part number 166772 and cross-references as 5KNH5 and F21PL2. It is classified as a Contact Arm Spring, designed as a direct replacement part for BOSTITCH air tools. This component restores proper contact-arm function in compatible pneumatic fastening tools.

Where to buy BOSTITCH Spring Contact Arm worldwide?

3G Electric supplies the BOSTITCH Spring Contact Arm (part #166772) to customers worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this replacement part for BOSTITCH models 5KNH5 and F21PL2.

How to install the BOSTITCH Spring Contact Arm?

To install the BOSTITCH Spring Contact Arm, first disconnect the tool from its air supply. Remove the old contact arm spring by releasing tension and sliding it off the pivot. Position the new spring (part #166772) onto the contact arm and housing, then reattach the retaining clip. Always consult the tool's manual for torque specs and safety steps.

Used in

Common applications for BOSTITCH
Construction framing — BOSTITCH pneumatic framing nailers (e.g., MCN250) for high-speed nailing of lumber and sheathing.
Woodworking assembly — BOSTITCH finish nailers for trim, molding, and cabinet installation requiring precise fastener placement.
Roofing applications — BOSTITCH coil roofing nailers for attaching shingles and underlayment on residential and commercial roofs.
Industrial packaging — BOSTITCH staplers for sealing corrugated boxes and crates in high-volume shipping environments.
Maintenance repair — BOSTITCH replacement parts (e.g., piston washers, o-ring kits) for servicing pneumatic tools in plant maintenance shops.
Compressor servicing — BOSTITCH air compressor heads (e.g., AB-7161400) for rebuilding or repairing stationary compressor units.
Not sure this is the right part? Photo-identify it

BOSTITCH Products

3G Electric supplies BOSTITCH air tool replacement parts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
BOSTITCH
BOSTITCH
Upper contact arm replacement part for pneumatic nailers and staplers. Compatible with BOSTITCH model F21PL2. Actuates the firing sequence when pressed against a workpiece
BOSTITCH
BOSTITCH
Replacement contact arm assembly for BOSTITCH pneumatic tools. This component engages the workpiece during fastening operations, enabling tool activation and consistent fastener placement. Suitable for use in framing, sheathing, and trim applications
BOSTITCH
BOSTITCH
Replacement spring for pneumatic fastening tools. Provides tension and return action for the drive mechanism. Compatible with part number 3HZF8. Used in applications requiring consistent fastener placement
BOSTITCH
BOSTITCH
Replacement contact arm assembly for BOSTITCH pneumatic nailers. Designed to engage the workpiece during fastening, ensuring consistent drive depth. Suitable for use in framing and sheathing applications
BOSTITCH
BOSTITCH
Replacement spring for pneumatic nailers and staplers. Restores tension and function in fastening tools. Compatible with model N66C-1
BOSTITCH
BOSTITCH
This lower contact arm is a replacement component for pneumatic staplers and nailers. It engages the workpiece to activate the tool's firing sequence. Designed for use with compatible BOSTITCH models

More from BOSTITCH

View all BOSTITCH parts
BOSTITCH
BOSTITCH
This cover/canister assembly is a replacement component for BOSTITCH pneumatic tools. It encloses and protects internal mechanisms, maintaining proper operation in fastening applications
BOSTITCH
BOSTITCH
Door pivot pin for pneumatic tools. Compatible with BOSTITCH model N66C-1. Used in air tool assemblies to enable pivoting motion in industrial fastening applications
BOSTITCH
BOSTITCH
This head valve seal is a replacement component for pneumatic tools, ensuring proper sealing within the air system to maintain consistent air pressure. It is suitable for use in industrial framing and sheathing applications
BOSTITCH
BOSTITCH
Warning label replacement part for pneumatic staplers and nailers. Compatible with BOSTITCH model 438S2R-1. Used to replace worn or missing labels to maintain safety compliance
BOSTITCH
BOSTITCH
Replacement washer for pneumatic tools, used as a sealing or spacing component in air tool assemblies. Compatible with select BOSTITCH models. Part number 180569
BOSTITCH
BOSTITCH
Check pawl spring for pneumatic nailers and staplers. Compatible with BOSTITCH part F21PL2. Ensures proper driver blade return to prevent misfires and jams
BOSTITCH
BOSTITCH
Replacement driver and piston assembly for BOSTITCH MCN250 pneumatic nailer. Restores fastening action in framing, sheathing, and construction applications. Includes driver blade and piston as a single service part
BOSTITCH
BOSTITCH
Replacement hook cap for pneumatic staplers and nailers. Secures and guides the tool's hook assembly. Compatible with Part # 36Z450/3HZF7/3HZF8

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first