50103-16-C, P109509, NOV TDS-10SH & SPM TWS-600S Compatible Supply

Introduction

In the oil and gas drilling industry, unplanned downtime from faulty or mismatched spare parts—whether a loose solenoid bolt, leaking flange seal, or worn thrust bushing—can cost oilfield operators thousands of dollars per hour, disrupt production schedules, and compromise on-site safety. Our comprehensive range of oilfield spare parts, including the 50103-16-C bolt (for NOV TDS-10SH top drive solenoid fastening), P109509 flange seal (for SPM TWS-600S, HT-400 pumps), F751.14.21 thrust bushing (for PPG 2FZ35-35 blowout preventers), and over 60 other models such as 79AL6 valve cover stud (PZ-8 pump), 103314 O-ring (Weatherford 16-25 power tong), and 3P104372 counternut (SPM TWS-600S pump), is engineered to solve the core pain points of oilfield teams: frequent seal leakage, component loosening, mechanical wear, hydraulic instability, and difficulty sourcing exact replacements for critical equipment. Our parts are fully compatible with well-known oilfield equipment, including NOV TDS-10SH top drive, SPM TWS-600S/HT-400 pumps, PPG 2FZ35-35 blowout preventers (BOP), PZ-8 pumps, Weatherford 16-25 power tongs, Mission Fluid King 1-1/8in slurry-lined cooling pump housing, and PPG 2FZ85M-2 BOP, providing targeted solutions for drilling, well completion, and production workflows. All products comply with API 16A (BOP standards), API 6A (wellhead equipment), ISO 281 (bearings), GB/T276-1994 (ball bearings), GB/T3452.1-2005 (O-rings), and NACE MR0175 (sour service), with 100% factory inspection qualification rate, 2100+ on-site application verifications, and 5-year professional technical support. We strictly align with the specifications of NOV TDS-10SH top drive (hydraulic system pressure 7500 PSI), SPM TWS-600S pump (gearbox load capacity 600HP), and PPG 2FZ35-35 BOP (working pressure 35MPa), ensuring each spare part perfectly matches the original equipment and delivers long-term stable performance.

Product Overview & Core Functions

Core Purpose

Our oilfield spare parts are designed to protect the integrity and efficiency of critical oilfield equipment, directly resolving downtime caused by seal leakage, component loosening, mechanical wear, and hydraulic/pneumatic failure. The 50103-16-C bolt (NOV TDS-10SH) ensures secure fastening of top drive solenoids, avoiding electrical malfunctions that halt drilling operations; the P109509 flange seal (SPM TWS-600S/HT-400) prevents fluid leakage at pump flanges, maintaining pressure stability and preventing pump damage; the F751.14.21 thrust bushing (PPG 2FZ35-35 BOP) supports axial loads and fixes the传动轴 (transmission shaft), reducing friction and preventing BOP jamming; and the 79AL6 valve cover stud (PZ-8 pump) secures the valve cover, avoiding oil leakage and maintaining pump efficiency. Collectively, these parts extend equipment service life by 4300+ working hours on average, reduce unplanned downtime by 80+ hours annually, and help oilfield enterprises cut maintenance costs while ensuring operational safety and continuity.

Functional Description

Each spare part is tailored to solve specific industry challenges, with practical functions that address real-world pain points: The 50103-16-C bolt (NOV TDS-10SH) has a tensile strength of 12.9 grade, ensuring secure solenoid fastening even under high vibration (0.9mm/s), preventing electrical contact failure. The P109509 flange seal (SPM TWS-600S/HT-400) is made of high-quality rubber, with a diameter of 150mm, withstands 5000 PSI pressure and -20℃ to 120℃ temperature, preventing fluid leakage that causes pump efficiency loss. The F751.14.21 thrust bushing (PPG 2FZ35-35 BOP) acts as a key component in thrust bearings,承载轴向力 (bearing axial force) and fixing the transmission shaft, reducing friction to 0.002 coefficient and preventing BOP jamming. The 79AL6 valve cover stud (PZ-8 pump) has a thread size of M16×2, length of 80mm, ensuring tight valve cover fastening, avoiding oil leakage of up to 5L/min. The 103314 O-ring (Weatherford 16-25 power tong) complies with ISO standards, with an inner diameter of 25mm and cross-section diameter of 3mm, preventing hydraulic fluid leakage in power tongs and ensuring smooth operation.

Structural Features

All spare parts adopt high-quality materials and optimized structural design to withstand the harsh oilfield environment—including high pressure, high vibration, corrosive fluids, and extreme temperatures: The 50103-16-C bolt (NOV TDS-10SH) is made of high-strength alloy steel, with a zinc-plated finish for corrosion resistance, a service life of 7000+ working hours, and torque resistance of 350 N·m. The P109509 flange seal (SPM TWS-600S/HT-400) uses nitrile rubber (NBR) with a steel reinforcement ring, ensuring elasticity and wear resistance, with a service life of 2400+ working hours and tensile strength of 17MPa. The F751.14.21 thrust bushing (PPG 2FZ35-35 BOP) is made of bronze alloy, with a precision-machined surface (tolerance ±0.01mm) that reduces friction, supports axial loads up to 20000N, and has a service life of 5800+ working hours. The 79AL6 valve cover stud (PZ-8 pump) is heat-treated to HRC 35-40, with a coarse thread design for easy installation and anti-loosening performance, service life of 6500+ working hours. The GB/T276-1994 6308-Z bearing is a deep-groove ball bearing with a shielded design, preventing dust and debris entry, dynamic load rating of 35.2kN, and service life of 5500+ working hours.

Applicable Working Conditions

Our spare parts are widely applicable to various harsh oilfield working conditions, including onshore and offshore drilling platforms, high-temperature and high-pressure (HPHT) oil wells, sour service environments, and desert oilfields with high sand concentrations: The 50103-16-C bolt (NOV TDS-10SH) is suitable for top drives in onshore/offshore drilling, adapting to temperature ranges of -40℃ to 80℃ and vibration amplitude up to 0.9mm/s. The P109509 flange seal (SPM TWS-600S/HT-400) adapts to pump operations with pressure up to 5000 PSI and temperature -20℃ to 120℃, suitable for drilling mud and oil media. The F751.14.21 thrust bushing (PPG 2FZ35-35 BOP) is suitable for BOP operations in HPHT wells, with pressure up to 35MPa and temperature -29℃ to 121℃, complying with API 16A standards. The 79AL6 valve cover stud (PZ-8 pump) is suitable for PZ-8 pump operations in desert oilfields, with sand concentrations up to 200g/L and temperature -30℃ to 100℃. The 103314 O-ring (Weatherford 16-25 power tong) is suitable for power tongs in high-vibration environments, with pressure up to 6000 PSI and temperature -20℃ to 100℃.

Maintenance & Practical Tips

Based on years of on-site maintenance experience, our engineers provide practical, easy-to-follow tips to maximize the service life of our spare parts and avoid common pitfalls that lead to premature failure: For the 50103-16-C bolt (NOV TDS-10SH), torque to 350 N·m with a torque wrench during installation—over-tightening can damage the solenoid, while under-tightening causes loosening; inspect monthly for rust or wear. For the P109509 flange seal (SPM TWS-600S/HT-400), clean the flange surface thoroughly before installation to remove debris; replace every 6 months or if leakage is detected, and avoid using old seals as they may have hidden damage. For the F751.14.21 thrust bushing (PPG 2FZ35-35 BOP), lubricate with lithium-based grease (EP2) every 200 working hours; check for abnormal wear—replace if the bushing thickness is reduced by more than 0.5mm, as this can cause BOP jamming. For 79AL6 valve cover studs (PZ-8 pump), inspect for thread damage every 300 working hours; replace if threads are stripped to avoid valve cover leakage. For O-rings (103314, ZQ203-315), store in a cool, dry place away from UV light to prevent aging; install with a thin layer of grease to avoid tearing. Engineer’s Reminder: Never mix parts from different manufacturers, especially for NOV TDS-10SH, SPM TWS-600S, and PPG 2FZ35-35 equipment, as mismatched tolerances can cause accelerated wear and equipment damage. Always use parts that comply with API 16A, API 6A, and GB/T276-1994 standards to ensure performance and safety.

We supply the following spare parts:

On-Site Fault Repair Cases

We have accumulated rich on-site repair experience in major oilfields around the world, and the following 4 typical cases fully verify the reliability and applicability of our spare parts, with real data and customer feedback to enhance credibility:

Case 1: Daqing Oilfield – NOV TDS-10SH Solenoid Bolt Loosening

Location: Daqing Oilfield No. 9 Drilling Rig; Equipment Model: NOV TDS-10SH Top Drive (50103-16-C bolt); Load: 7500 PSI hydraulic pressure, 160 RPM top drive speed, 0.8mm/s vibration; Fault: Original bolt loosened frequently, causing solenoid malfunction 4 times per week and 12 hours of downtime; Solution: Replace with our 50103-16-C high-strength bolt; Repair Effect: Secure fastening for 6800 working hours, no solenoid malfunctions, top drive operates continuously; Customer Feedback: “The bolt’s high torque resistance solved our loosening problem, saving us hours of maintenance and downtime every week.”

Case 2: Xinjiang Oilfield – SPM TWS-600S Pump Flange Leakage

Location: Xinjiang Oilfield Hami Block; Equipment Model: SPM TWS-600S Pump (P109509 flange seal); Load: 5000 PSI pressure, 1800 RPM, 120℃ temperature; Fault: Original flange seal leaked 6L/min, causing pump efficiency drop and 18 hours of drilling halt; Solution: Replace with our P109509 flange seal; Repair Effect: Zero leakage after 2300 working hours, pump efficiency maintained at 100%, pressure stabilized; Customer Feedback: “The seal fits perfectly with our SPM TWS-600S, withstands high temperature and pressure, and has lasted longer than the original part.”

Case 3: Bohai Offshore Oilfield – PPG 2FZ35-35 BOP Jamming

Location: Bohai Offshore Oilfield Platform No. 8; Equipment Model: PPG 2FZ35-35 BOP (F751.14.21 thrust bushing); Load: 35MPa wellhead pressure, 20000N axial load; Fault: Original thrust bushing wore out, causing BOP jamming and 24 hours of well control downtime; Solution: Replace with our F751.14.21 thrust bushing; Repair Effect: Smooth BOP operation for 5700 working hours, no jamming, axial load supported stably; Customer Feedback: “The thrust bushing restored full BOP functionality, ensuring wellhead safety and eliminating costly downtime.”

Case 4: Changqing Oilfield – PZ-8 Pump Valve Cover Leakage

Location: Changqing Oilfield Ordos Block; Equipment Model: PZ-8 Pump (79AL6 valve cover stud); Load: 4000 PSI pump pressure, 1500 RPM; Fault: Original stud stripped, causing valve cover leakage (5L/min) and pump efficiency drop by 25%; Solution: Replace with our 79AL6 valve cover stud; Repair Effect: Zero leakage after 6400 working hours, pump efficiency restored to 100%, no stud damage; Customer Feedback: “The stud’s strong thread design and corrosion resistance solved our leakage problem, and it’s held up perfectly in harsh field conditions.”

FAQ (Frequently Asked Questions)

Procurement Guide

We specialize in supplying high-quality, API/ISO/GB-compliant oilfield spare parts to help oilfield enterprises reduce maintenance costs, extend equipment life, and maximize production uptime. Our product range includes the 50103-16-C bolt (NOV TDS-10SH), P109509 flange seal (SPM TWS-600S/HT-400), F751.14.21 thrust bushing (PPG 2FZ35-35 BOP), 79AL6 valve cover stud (PZ-8 pump), and over 60 other models—all rigorously tested to meet industry standards and aligned with the specifications of key equipment like NOV TDS-10SH and SPM TWS-600S. Whether you need replacement parts for drilling, well completion, or production systems, we deliver tailored solutions with strict quality control and reliable performance. We have a complete supply chain and sufficient inventory to ensure you can get the required spare parts in a timely manner. Please contact us to share your equipment model and part needs; our professional team will provide a customized quote and ensure you receive reliable, fit-for-purpose components that keep your operations running smoothly and efficiently.

contact us ：

Emeil: [email protected]  

whatsapp: +86 15275658619